Xiu-Yan Dong

Lanzhou Jiaotong University · Department of Chemical and Biological Engineering

The diversified development of electronic products stimulates the great demand for flexible energy storage devices with high energy density. Poly (1,5-diaminoanthraquinone) (PDAAQ) is considered as a highly promising electrode material due to its unique π-conjugated structure and high theoretical capacitance. Herein, we first prepare cetyltrimethyl...

We have designed and synthesized two new Co-CPs by modulating the concentration of cobalt ions, namely [Co3(HL)2(4,4′-bibp)3(H2O)4]n (1) and {[Co9(L)4(4,4′-bibp)4(H2O)6(μ2-OH)2]·4,4′-bibp·2H2O}n (2) (H4L = 1,1′,2′,1″-terphenyl-4,4′,4″,5′-tetracarboxylic acid and 4,4′-bipb = 1,4-di(pyridin-4-yl)benzene). CP 1 is a three-dimensional (3D) pillar-layer...

Two new complexes based on 4,4'‐[1,3‐Phenylenebis (oxy)] diphthalic acid (H4L) ligands were synthesized, named [Cd2(L)(1,10‐phen)2(H2O)]n(1) and [Co2(L)(1,10‐phen)2(H2O)]n(2), in which 2D structures transform into 3D supramolecular structures by C‐H···π interaction. The proton conductivity of complexes 1 and 2 at low temperature is close (σ1 = 3.12...

Two new cobalt(ii) MOFs, namely [Co2(L)2(4,4′-bipy)]n (1) and {[Co(L)(dib)0.5(H2O)2]·H2O}n (2), were obtained by the self-assembly of Co(NO3)2·6H2O with V-shaped 2,4-[6-(4-carboxyphenyl)pyrazin-2-yl]benzoic acid (H2L) in the presence of two bridging auxiliary N-donor linkers, 1,4-di(1H-imidazole-1-yl) benzene (dib) and 4,4′-bipyridine (4,4′-bipy)....

Three novel nickel (II) coordination polymers [Ni3(L)2(4,4′-bipy)2(NO3)2(H2O)4]n (1), [Ni(L)(4,4′-bipy)0.5]n (2), and [Ni(L)(dib)0.5(H2O)2]n (3) have been successfully constructed using the hydrothermal reactions of Ni(NO3)2•6H2O with 2,4-[6-(4-carboxyphenyl)pyrazin-2-yl]benzoic acid (H2L) and corresponding N-donor ligands, namely, 4,4′-bipyridine...

Three new complexes with three-periodic (3D) structure were synthesized by hydrothermal method with 3-(2,4-di-carboxyphenoxy)phthalic acid (H4L) as main ligand, 1,4-bis((1H-imidazol-1-yl)methyl)benzene (bix) and 1,4-di(pyridin-4-yl)benzene (4,4′-bipb) as co-ligands: [Co2(L)(bix)(H2O)]n (1), { [Cd2(L)(bix)0.5(H2O)2]H2O}n (2), [Zn2(L)(4,4′-bipb)]n (3...

Redox-active covalent organic frameworks (COFs) are an emerging class of energy storage materials with notably abundant active sites, well-defined 1D channels and highly surface areas. However, during the process of...

The incremental use of antibiotics is now posing a pollution problem in the aquatic system. Therefore, it is necessary to decompose this class of harmful components existing in wastewater. Metal-organic frameworks (MOFs) are a peculiar class of multidimensional materials that can be employed as a photocatalyst to decompose antibiotics present in th...

The incremental use of antibiotics by our society is now another reason of aquatic pollution as these antibiotics are now existing in the wastewater discharge. Therefore, it is necessary to...

Four novel metal–organic frameworks constructed from benzimidazole flexible tetracarboxylic acid ligand, 1-(3,5-dicarboxylbenzyl)-1H-benzimidazole-5,6-dicarboxylic acid (H4L), have been prepared by a solvothermal method in the presence of N-donor ancillary ligands (1,10-phen = 1,10-phenanthroline monohydrate, 4,4′-bibp = 1,4-di[pyridine-4-yl]benzen...

Three new complexes synthesized by hydrothermal method with 4-(3-Carboxy-phenoxy)-phthalic acid (H3L¹) and 2-(4-Carboxy-benzyl)-terephthalic acid (H3L²) as main ligands, 1,10-phenanthroline (1,10-phen) 1,4-bis(1-imidazolyl)benzene(dib) and 1,4-di(pyridin-4-yl)benzene (4,4′-bipb) as auxiliary ligands: [Cd3(L¹)2(1,10-phen)2·H2O]n (1), [Co(HL²)(dib)(H...

Three Cd(II)-based metal-organic frameworks (MOFs), namely, [Cd(HL¹)(4,4′-bipb)]n (1), [Cd2(L²)(4,4′-bipb)2(H2O)3]n (2), {[Cd2(L³)(4,4′-bipb)(H2O)2]•(4,4′-bipb)0.5}n (3), where H3L¹, H4L², H4L³, and 4,4′-bipb are semi-rigid 2-(4-carboxyphenoxy) terephthalic acid, 3-(2,4-dicarboxyphenoxy)phthalic acid, 3,3′-(1,3- phenylenebis(oxy))diphthalic acid, a...

In this work, two MOFs, {[Cd3(L)2(m-BDC)(NO3)4]·2(H2O)}n (1) and [Zn3(L)(m-BDC)3]n (2), were synthesized using the hydrothermal method. Single crystal diffraction showed that the flexible tripod ligand L (1,3,5-[1-(2-methylimidazole-methylene)]benzene) delivers completely different configurations under the influence of the coordination metal [Cd(II...

Redox-active covalent organic frameworks (COFs) are an emerging class of energy storage materials due to their notably abundant active sites, well-defined channels and highly surface areas. However, their poor electrical conductivity and low electrochemical accessibility to the active sites have severely restricted their practical applications. Her...

C27H18CdN6O4, triclinic, P1‾ (no. 2), a = 10.2994(8) Å, b = 10.7795(7) Å, c = 11.0038(7) Å, α = 89.778(5)°, β = 78.046(6)°, γ = 83.049(6)°, Z = 2, V = 1186.11(14) Å3, Rgt(F) = 0.0402, wRref(F2) = 0.0809, T = 293 K.

A new asymmetric Salamo‐based ligand H2L was synthesized using 3‐tert‐butyl‐salicylaldehyde and 6‐methoxy‐2‐[O‐(1‐ethyloxyamide)]‐oxime‐1‐phenol. By adjusting the ratio of the ligand H2L and Cu (II), Co (II), and Ni (II) ions, mononuclear, dinuclear, and trinuclear transition metal (II) complexes, [Cu(L)], [{Co(L)}2], and [{Ni(L)(CH3COO)(CH3CH2OH)}...

Two novel complexes, namely [Cd(L)(NO3)2]n (1) and {[Cd(L)(NO3)2](CH3CH2OH)}n (2) (L = 1,3,5-tris[1-(4-oxidroxypyridinium-methylene)]benzene) are synthesized solvothermally in different solvents. Single crystal and powder X-ray diffraction, infrared spectroscopy, thermogravimetry, 2D fingerprint plots, and Hirshfeld surface analyses are carried out...

Seven new metal-organic frameworks (MOFs), namely, [Zn2(L1)(H2O)3]n (1), [Zn2(L1)(dib)(H2O)2]n (2), {[Zn2(L1)(4,4'-bipy)(H2O)2]·H2O}n (3), [Cd2(L1)(1,10-phen)]n (4), [Ni2(HL1)(4,4'-bipy)(μ3-OH)(μ2-H2O)]n (5), {[Co4(L1)(4,4'-bibp)3]·(4,4'-bibp)3}n (6), and [Co2(L2)(4,4'-bibp)2(H2O)]n (7), where H4L1 and H4L2 are semi-rigid 3-(3,5-dicarboxylphenoxy)p...

In this work, we select a novel multi-redox poly (1, 5-diaminoanthraquinone) (PDAAQ) as electroactive material and Cetyltrimethylammonium bromide (CTAB) modified graphene oxide (CGO) as conductive substrate. Benefit from the excellent dispersion of CGO in organic polymerization medium and the abundant functional groups on the surface of CGO, 1, 5-d...

A newly synthesized fluorescent chemosensor H6L was explored for detecting B4O7²⁻, characterized by ¹H NMR spectrum, mass spectrum and fluorescence spectra. During the detection process of B4O7²⁻, the fluorescence is significantly enhanced and naked eye recognition can be performed under 365 nm UV light without any interference by other typical ani...

Three rare heteromultinuclear complexes, ∞[NiL(4,4′‐bipy)Pr (NO3)3]·(CH3)2CHOH (1), [{CuLSm (NO3)3}2(4,4′‐bipy)]·CH3OH (2) and [{CuL (CH3CH2OH)Eu (NO3)3] (3) with a symmetrical salamo‐like hexadentate ligand H2L have been synthesized, and characterized by FT‐IR, UV–vis and X‐ray crystallography. Complex 1 is a 1D coordination polymer constructed fr...

C 14 H 14 CdN 6 O 6 , monoclinic, P 2 1 / c (no. 14), a = 11.2983(5) Å, b = 9.2539(4) Å, c = 17.0604(7) Å, β = 105.398(1)°, Z = 4, V = 1719.69(13) Å ³ , Rgt ( F ) = 0.0321, wRref ( F² ) = 0.1060, T = 193(2) K.

Two new complexes [{Zn(L¹)(μ-OAc)Zn(CH3CHOHCH3)}2] and [Ni(L2)(H2O)(CH3OH)] with asymmetric Salamo-type ligands (H3L¹ and H2L²) are synthesized and structurally characterized. In the Zn(II) and Ni(II) complexes, the terminal and central Zn(II) atoms are found to have slightly distorted square pyramidal and trigonal bipyramidal symmetries respective...

A novel supramolecular Cu(ΙΙ) complex [Cu2(L²)2] (H2L2 = 4-bromosalicylaldehyde O-(2-hydroxyethyl)oxime) is synthesized through the complexation of Cu(OAc)2·H2O with an asymmetric salamo-type ligand 4-bromo-6′-hydroxy-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol (H3L¹) and is structurally characterized by single crystal X-ray diffraction. Th...

A new trinuclear Zn(II) complex [(ZnL)2(OAc)2Zn]·2THF with a Salamo-type bisoxime ligand H2L (2,2′-[ethylenedioxybis(nitrilomethylidyne)]dinaphthol) is synthesized and structurally characterized. The luminescence study demonstrates that the Salamo-type ligand exhibits a good antennae effect with respect to the Zn(II) ion due to an efficient intersy...

Two new hetero-trinuclear 3d-4f complexes [Zn2(L)Ho(μ2-OAc)2(OAc)(MeOH)]·CH2Cl2 (1) and [Zn2(L)Er(μ2-OAc)2]OAc (2), derived from a bis(salamo)-based ligand H4L, were synthesized and characterized via elemental analyses, IR, UV–Vis, fluorescence spectra and X-ray crystallography. The X-ray crystal structure analyses demonstrated that two μ2-acetatea...

A novel heterotrinuclear complex [Cu2(L)Na(µ-NO3)]∙CH3OH∙CHCl3 derived from a symmetric bis(salamo)-type tetraoxime H4L having a naphthalenediol unit, was prepared and structurally characterized via means of elemental analyses, UV-Vis, FT-IR, fluorescent spectra and single-crystal X-ray diffraction. The heterobimetallic Cu(II)–Na(I) complex was acq...

A novel naphthalenediol‐based bis(salamo)‐type tetraoxime compound (H4L) was designed and synthesized. Two new supramolecular complexes, [Cu3(L)(μ‐OAc)2] and [Co3(L)(μ‐OAc)2(MeOH)2]·4CHCl3 were synthesized by the reaction of H4L with Cu(II) acetate dihydrate and Co(II) acetate dihydrate, respectively, and were characterized by elemental analyses an...

C 18 H 12 N 2 O 8 , triclinic, P 1̄ (no. 2), a = 8.4592(10) Å, b = 9.8442(11) Å, c = 11.2565(12) Å, α = 66.892(3)°, β = 86.069(3)°, γ = 81.658(4)°, V = 852.97(17) Å ³ , Z = 2, Rgt ( F ) = 0.0609, wRref ( F² ) = 0.1557, T = 153(2) K.

Four new solvent-induced Co(II) complexes with chemical formulae [{CoL(µ2 -OAc)(MeOH)}2 Co] (1), [{CoL(µ2 -OAc)(EtOH)}2 Co] (2), [{CoL(µ2 -OAc)(Py)}2 Co] (3) and [{CoL(µ2 -OAc)(DMF)}2 Co] (4) (H2 L = 4-nitro-4′ -chloro-2,2′ -[(1,3-propylene)dioxybis (nitrilomethylidyne)]diphenol) have been synthesized and characterized by elemental analyses, FT–IR,...

A trinuclear Co(II) complex, [{CoL(C4H9OH)}2-(OAc)2Co]·C3H7NO, was synthesized by the reaction of a Salamo-type chelating ligand (H2L=4,42′-dinitro-2,2′-[1,2-ethylenedioxybis(nitrilomethylidyne)]diphenol) with cobalt(II) acetate tetrahydrate in n-butanol, and characterized by elemental analyses, X-ray crystallography, FT-IR and UV/Vis spectra. In t...

C43H48Br4Co2N6O9, triclinic, P1̅, a = 11.9298(7) Å, b = 12.8850(9) Å, c = 17.5241(11) Å, α = 84.854(6)°, β = 85.181(5)°, γ = 65.796(6)°, V = 2443.7(3) ų, Z = 2, Rgt(F) = 0.0556, wRref(F²) = 0.1053, T = 293.51(10) K.

Three heterometallic Ni(II)–M(II) (M = Ca, Sr and Ba) complexes, two discrete heterotrinuclear complexes [Ni2(L)Ca(OAc)2(CH3OH)2]·2C2H5OH·2CHCl3 (1) and [Ni2(L)Sr(OAc)2(CH3OH)2]·2CH3OH·2CH2Cl2 (2) and a discrete heterohexanuclear dimer [Ni2(L)Ba(OAc)2(CH3OH)2(H2O)]2·2CH3OH (3), were synthesized with a naphthalenediol-based acyclic bis(salamo)-type...

C46H56Zn3N6O14, monoclinic, C2/c (no. 15), a = 10.6703(7) Å, b = 27.091(4) Å, c = 17.9132(16) Å, β = 96.246(8)°, V = 5147.4(10) ų, Z = 4, Rgt(F) = 0.0647, wRref(F²) = 0.1865, T = 291(1) K.

Two newly designed complexes, [Zn(L¹)(EtOH)] (1) and [{Zn(L²)(OAc)2}2Zn]_CHCl3 (2) derived from salamo and half-salamo chelating ligands (H2L¹ and HL²) have been synthesized and characterized by elemental analyses, IR and UV-VIS spectra, fluorescence spectra, and X-ray crystallography. Complex 1 shows a slightly distorted tetragonal pyramid and for...

A new tetranuclear Zn(II) complex, [{Zn(L)(μ-OAc)Zn(H2O)}2], based on an asymmetrical salamo-type bisoxime chelating ligand H3L (6-hydroxy-4′-chloro-2,2′-[ethylenediyldioxybis(nitrilomethylidyne)]diphenol) was synthesized and characterized by elemental analyses, differential thermal methods, single-crystal X-ray crystallography, and IR, UV–vis, and...

A new dinuclear Ni(II) complex, [{Ni(L)(C5H5N)}2], has been synthesized with 4-chloro-4′,6′-dibromo-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol (H2L), and characterized by elemental analyses, FT-IR, UV/Vis, molar conductance and X-ray crystallographic analysis. Each Ni(II) atom is located at a N2O2 coordination site of a completely deproton...

A novel Schiff-base oxime sensor H2L with the ONON chelating moieties was designed and synthesized based on condensation reaction. Different methods such as elemental analyses, FT-IR, ¹H and ¹³C NMR were fully utilized in characterizing the structure of sensor H2L. The UV–vis spectra of the Zn²⁺ complex exhibit four clear isosbestic points which ma...

C18H19BrN2O5, triclinic, P1̅ (no. 2), a = 9.0429(7) Å, b = 9.5752(11) Å, c = 11.8422(15) Å, α = 70.954(11)°, β = 72.691(8)°, γ = 84.794(8)°, V = 925.33(18) Å3, Z = 2, Rgt(F) = 0.0511, wRref(F2) = 0.0876, T = 173 K.

An unexpected dinuclear Cu(II) complex, [Cu2(L2)2], has been synthesized via complexation of Cu(II) acetate monohydrate with a bis(Salamo) ligand H2L1. Catalysis of Cu(II) ions results in unexpected cleavage of two N-O bonds in H2L1, giving a dialkoxo-bridged dinuclear Cu(II) complex. Each Cu(II) complex possesses a Cu-O-Cu-O four-membered ring ins...

Five Co-II complexes based on H3L1 and H3L2, namely, [Co-3(L-1)(2)(4,4'-bipy)(H2O)(3)](n) (1), [Co-3(L-1)(2)(4,4'-bipy)(3)(H2O)(4)](n) (2), {[Co-2(Li)(4,4'-bibp)(mu(3)-OH)(H2O)]center dot H2O}(n) (3), {[CO3(L-2)(2)(dib)(3)]center dot 2H(2)O}(n) (4), and [CO3(L-2)(2)(4,4'-bibp)(3)](n) (5) [(H3L1 = 4-[(3-carboxynaphthalen-2-yl)oxy]phthalic acid, H3L2...

A new Cu(II) complex with asymmetric Salamo-type ligand (H2L, 4-bromo-6′-ethoxy-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol) has been synthesized and characterized structurally. The X-ray crystal structure of the Cu(II) complex shows it to be a binuclear complex, in which each Cu(II) atom is in a distorted square-pyramidal geometry. The Cu(...

A novel bis(salamo)-type multipledentate chelating ligand H4L and its three Cu2+, Zn2+ and Zn2+-Eu3+ complexes have been designed and synthesized and characterized by elemental analyses, IR, UV-visible spectra and 1H NMR spectroscopy. The bis(salamo)-type compound H4L shows that the complexation between H4L and metal ions can affords 1:3 complex [M...

A series of bromo-substituted Salamo-type bisoximes H2L1-H2L3 have been synthesized through condensation reactions of 3,5-dibromosalicylaldehyde with 1,2-bis(aminooxy)ethane, 1,3-bis(aminooxy)propane and 1,4-bis(aminooxy)butane in ethanol medium, respectively and characterized by elemental analyses, IR and 1H NMR spectra. In the crystal structure o...

A salamo-type chelating ligand 4-chloro-6′ -methoxy-2,2′ -[ethylenediyldioxybis (nitrilomethylidyne)] diphenol (H2L) and its complex [Co(L)(H2O)], have been synthesized and characterized by elemental analyses, IR spectra, UV-Vis spectra and X-ray single crystal diffraction method. The ligand crystallizes in the monoclinic system, space group P21/n...

A dinuclear Cu(II) complex, [Cu 2(L 2) 2] (H 2L 2 = 4-methoxysalicylaldehyde O-(2-hydroxyethyl)-oxime) , has been synthesized through the complexation of Cu(II) acetate monohydrate with the ligand H 2L1 (H 2L1 = 5,5′ -dimethoxy-2,2′-[(ethylene)dioxybis(nitrilomethylidyne)]diphenol), and characterized by elemental analyses, IR, UV/Vis and emission s...

A novel trinuclear Ni(II) complex [{NiL(n-PrOH)(μ-OAc)}2Ni]·n-PrOH·H2O with an asymmetric Salamo-type ligand, 5-methoxy-4'-bromo-2,2'-[ethylenedioxybis(nitrilomethylidyne)]diphenol (H2L), has been synthesized and characterized by elemental analyses, IR, UV/Vis and fluorescence spectra and molar conductance measurement. The crystal structure of the...

A novel trinuclear Co(II) complex, {[CoL(PrOH)]2Co(H2O)}·PrOH, has been synthesized with 6-ethoxy-6′-hydroxy-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol (H3L), and characterized by elemental analyses, FT-IR, UV–Vis, molar conductance and X-ray crystallographic analysis. Two n-propanol molecules and one water molecule coordinate to three Co(...

A new Cu(II) complex has been synthesized by the reaction of a new Salamo-type ligand of 2,2'-[ethylenedioxybis(nitrilomethylidyne)] dinaphthanol (H2L) with Cu(II) acetate monohydrate in acetone/methanol solution and characterized by X-ray diffraction methods. The X-ray crystallography of the Cu(II) complex shows it to be a mononuclear complex, in...

A novel Co(II) dimer, [Co(HL)]2, has been synthesized by the reaction of H3L and Co(CH3COO)2.4H2O in acetonitrile/methanol solution. X-Ray crystallographic analysis reveals that the Co(II) complex crystallizes in the triclinic system, space group P-1. The Co(II) atom is five-coordinated by four donor atoms of N2O2 coordination sphere and one O atom...

A novel Cu(II) dimer, [CuL]2, has been synthesized via the complexation of Cu(II) acetate monohydrate with 6-ethoxy-4′,6′- dibromo-2,2′-[ethylenedioxybis(nitrilo-methylidyne)] diphenol (H 2L) in methanol/acetone mixed solution and characterized structurally by X-ray diffraction method. X-ray crystallographic analysis reveals that the Cu:L is 2:2 in...

A new Cu(II) complex with asymmetric Salamo-type ligand, 6-ethoxy-4',6'-dichloro-2,2'-[ethylenedioxybis(nitrilomethylidyne)]diphenol (H2L) has been synthesized and characterized by elemental analyses, FT-IR, UV-visible spectra and single crystal X-ray crystallography. The X-ray crystal structure of the Cu(II) complex reveals it to be a mononuclear...

An asymmetrical Salamo-type ligand, 5-methoxy-6'-hydroxy-2,2'-[ethylenedioxybis(nitrilomethylidyne)] diphenol (H3L), and its Zn (I) complex, [Zn4L2 (CH3OH)(2) (OAc)(2)], have been synthesized and structurally characterized by X-ray diffraction methods. X-ray crystallographic analyses reveal that the ligand adopts a V-shaped configuration, in which...

C53.18H76.38N4Ni3O21.06, triclinic, P (1) over bar (no. 2), a = 11.557(2) angstrom, b = 11.913(2) angstrom, c = 12.136(2) angstrom, alpha = 70.175(3)degrees, beta = 71.716(2)degrees, gamma = 85.930(3)degrees, V = 1491.3 angstrom(3), Z = 1, R-gt(F) = 0.040, wR(ref)(F-2) = 0.106, T = 298 K.

An unexpected dinuclear Cu(II) complex, [Cu2 (L 2)2] (H2L2 = 3- methoxysalicylaldehyde-O-(2-hydroxyethyl)oxime) has been synthesized through the complexation of Cu(OAc)2H2O with an asymmetrical Salamo-type compound 6-ethyloxy-6'-methoxy-2,2'- [ethylenediyldioxybis(nitrilomethylidyne)]diphenol (H2L1). The catalysis of Cu(II) ions results in the unex...

A new trinuclear Ni(II) complex has been synthesized through the reaction of an asymmetric Salamo-type ligand of 5-methoxy-4′-chloro-2,2′- [ethylenedioxybis(nitrilomethylidyne)]diphenol (H2L) with Ni(II) acetate tetrahydrate in n-butanol/acetonitrile solution and characterized by X-ray diffraction methods. The X-ray crystallography of the Ni(II) co...

Four tetrahalogen substituted Salamo-type bisoximes H2L 1-H2L4 have been synthesized from 3-bromo-5-chloro-2-hydroxybenzaldehyde and 1,7-bis(aminooxy)heptane, 1,8-bis(aminooxy)octane, 1,9-bis(aminooxy)nonane or 1,10-bis(aminooxy)decane in ethanol medium, respectively and characterized by elemental analyses as well as IR, UV-visible and 1H NMR spect...

Two copper(I) complexes, [Cu(L)]ClO4 (1) and [Cu(L)Cl]•C2H5OH (2), have been synthesized by the reaction of copper(II) perchlorate hexahydrate and copper(II) chloride dihydrate with N,N'-(1,2-dimethylene)bisbenzoylthiourea (L), respectively and characterized by elemental analyses as well as IR spectra and TG-DTA analyses. Antibacterial activity ass...

Four new methoxy-substituted Salamo-type bisoxime compounds 6,6'-dimethoxy-2,2'-[(propylene-1,3-diyldioxy)bis(nitrilomethylidyne)] diphenol (H2L1), 6,6'-dimethoxy-2,2'-[(butylene-1,4-diyldioxy)bis(nitrilomethylidyne)]diphenol (H2L2), 6,6'-dimethoxy- 2,2'-[(propane-1,5-diyldioxy)bis(nitrilome-thylidyne)]diphenol (H2L3) and 6,6'-dimethoxy-2,2'-[(hexa...

A Ni(II) complex with 5-methoxy-4'-bromo-2,2'- [ethylenedioxybis(nitrilomethylidyne)]diphenol (H2L) has been synthesized, with the formula {[NiL(n-butanol)(μ-OAc)]2Ni}•n-butanol. The crystal of the Ni(II) complex belongs to triclinic, space group P-1 with cell dimensions a = 10.897(1) Å, b = 12.439(1) Å, c =12.518(1) Å and Z = 1. In the Ni(II) comp...

N-Benzoylthiourea has been synthesized and characterized by elemental analysis, IR and 1H NMR etc. The X-ray crystallography of the compound indicates that the carbonyl group forms an intramolecular hydrogen bond with the N2-H2 group, which forms a six-membered ring (C7/N1/C8/N2/H2/O1) srtucture. Each molecule are linked by the intermolecular N2-H2...

Five bisoxime chelating ligands L1-L5 have been synthesized from 2-naphthaldehyde and 1,2-bis(aminooxy)ethane, 1,3-bis(aminooxy)-propane, 1,4-bis(aminooxy)butane, 1,5-bis(aminooxy)pentane and 1,6-bis(aminooxy)hexane in hot ethanolic medium, respectively and characterized by elemental analyses, IR, UV-visible spectra and 1H NMR spectroscopy. The bis...

Four novel bromo-substituted Salamo-type bisoxime compounds H2L1-H2L4 have been synthesized from 5-bromo-2-hydroxybenzaldehyde and 1,3-bis(aminooxy)propane, 1,4-bis(aminooxy)butane, 1,5-bis(aminooxy)pentane or 1,6-bis(aminooxy)henane in hot ethanolic medium, respectively and characterized by elemental analyses, IR, UV-visible spectra and 1H NMR spe...

Four tetrahalogen substituted Salamo-type bisoximes H2L1-H2L4 have been synthesized from 3-bromo-5-chloro-2-hydroxybenzaldehyde and 1,3-bis(aminooxy) propane, 1,4-bis(aminooxy)butane, 1,5-bis(aminooxy)pentane or 1,6-bis(aminooxy)hexane in ethanol solution, respectively and characterized by elemental analyses as well as IR, UV-visible and 1H NMR spe...

Several novel methoxy-substituted Salamo-type compounds have been synthesized by the condensation reactions of 3-methoxy-2-hydroxybenzaldehyde with 1,7-bis(aminooxy)heptane, 1,8-bis(aminooxy)octane, 1,9-bis(aminooxy)nonane or 1,10-bis(aminooxy)decane in ethanol medium, respectively and characterized by elemental analyses, IR, UV-visible and 1H NMR...

The molecule of 6-ethoxy-4'-chloro-2,2'- [ethylenedioxybis(nitrilomethylidyne)]diphenol with the molecular formula C 18H19N2O5Cl, adopts a V-shaped configuration, in which the benzene units are approximately perpendicular, making a dihedral angle of 78.97(3)°. Intramolecular H-bonds are formed between the OH groups and the oxime N atoms. In the cry...

A Salamo-type ligand 5-methoxy-4'-chloro-2,2'- [ethylenedioxybis(nitrilomethylidyne)]diphenol (H2L) and its corresponding Ni(II) complex have been synthesized. The Ni(II) complex has been characterized by single crystal X-ray crystallography. The crystal structure shows that two water molecules coordinated to the hexa-coordinated terminal Ni(II) (N...

A supramolecular trinuclear Ni(II) complex, namely {[NiL(EtOH)(μ-OAc)] 2Ni}·EtOH, has been synthesized through the complexation of nickel(II) acetate tetrahydrate with 5-methoxy-4'-bromo-2,2'- [ethylenedioxybis(nitrilomethylidyne)]diphenol (H2L). The Ni(II) complex comprises three Ni(II) atoms, two deprotonated L2- units, two acetate aions, two coo...

Three divalent transition metal complexes, [M3(HL)(CH3COO)].EtOH [M = Co(II), Ni(II) and Cd(II)] have been synthesized by the reaction of 5,5',6,6'-tetrahydroxy-2,2'-[ethylene-1,2-diyldioxy)bis(nitrilomethylidyne)] diphenol (H6L) with Co(II), Ni(II) and Cd(II) acetate hydrates in anhydrous ethanol medium, respectively. All the complexes were charac...

The compound, (Z)-4-({4-[1-(hydroxyimino)ethyl]phenylimino}(phenyl)methyl)- 3-methyl-1-phenyl-1H-pyrazol-5(4H)-one has been synthesized and characterized by elemental analyses, IR spectra and X-ray diffraction method. This compound is a potential tridentate ligand containing mono-oxime group. In the crystal structure, there are two crystallographic...

A new hexa-coordinated zinc(II) complex, namely [ZnL(H2O)2]n, with N2O2 coordination sphere (H2L=4,4'-dibromo-6,6'-dichloro-2,2'-[ethylenedioxybis(nitrilomethylidyne)]diphenol) has been synthesized and structurally characterized by elemental analyses, IR, UV-vis spectra and TG-DTA analyses, etc. Crystallographic data are monoclinic, space group P21...

The molecule of the Cu(II) complex with the empirical formula C 34H26N4O4Cu, bis(4-benzoyl-3-methyl- 1-phenyl-5(2H)-2- pyrazolonato)copper(II), is rigorously centrosymmetric [symmetry codes: -x + 1, -y + 1, -z + 1]. Each Cu(II) atom is four-coordinated by two oxygen atoms (O1 and O1#) from pyrazolone ring in deproton enol-form and other two oxygen...

The compound 1-phenyl-3-methyl-4-benzoylpyrazolon-5-one with the molecular formula C17H14N2O2, exists in a keto-enamine tautomeric form. The pyrazolone ring makes dihedral angles of 28.36(3) and 59.31(5) with the two phenyl rings. The molecules are linked into twodimensional supramolecular structure by a combination of N-H···O and C-H···O hydrogen-...

A series of benzoylthiourea derivatives have been synthesized from benzoyl isothiocyanate and phenyleneamine in CH2Cl2 medium under solid-liquid phase transfer catalysis conditions. Structures of these compounds have been characterized by elemental analyses as well as IR and 1H NMR spectroscopy. All the compounds were tested for their antibacterial...

Five bisbenzoylthiourea compounds have been synthesized from benzoyl isothiocyanate and different diamines in CH2Cl2 medium under solid-liquid phase transfer catalysis conditions. Structures of these compounds have been characterized by elemental analyses as well as IR and H-1 NMR spectroscopy. These compounds were tested for their antibacterial an...

[Zn4(L1)2(OAc)2(CH3CH2OH)2] and [CuL2(H2O)] with new asymmetric Salamo-type ligands have been synthesized and characterized. There are two coordination geometries (trigonal bipyramidal and square pyramidal) in the Zn(ΙΙ) complex, and the Cu(II) complex has square-pyramidal geometry. A self-assembling continual zigzag chain is formed by intermolecul...

A new mononuclear CdII complex, [CdL(H2O)2], with halogen-substituted Salen-type bisoxime ligand (H2L = 4,4′-dibromo- 6,6′-dichloro-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol), was synthesized and structurally characterized. The CdII complex crystallizes in the monoclinic system, space group C2/c. The CdII center exhibits a slightly distor...

A new mononuclear Cu(II) complex, [CuL], has been synthesized by the reaction of copper(II) acetate tetrahydrate with H2L (H2L = 4-bromo-6'-methoxy-2,2'-[ethylenediyldioxybis(nitrilomethylidyne)]diphenol). X-Ray crystallographic analysis reveals that the complex crystallizes in the monoclinic system, space group P2(1) and the unit cell contains two...

The chelating bis-oxime compound i.e., 5,5'-dimethoxy-2,2'-[(hexane-1,6- diyldioxy)bis(nitrilomethylidyne)]diphenol with the molecular formula C 22H28N2O6, assumes an E configuration with respect to the azomethine C=N bond and the two phenyl rings are parallel to each other. There are two fairly strong intramolecular O2-H2...N1 and O5-H5...N2 hydro...

The compound 4,4'-dichloro-6,6'-dibromo-2,2'-[(hexane-1,6-diyldioxy) bis(nitrilomethylidyne)]diphenol with the molecular formula C20H 20N2O2Br2Cl2, is central symmetric structure and two phenyl rings in each molecule are parallel to each other. Two intramolecular O2-H2...N1 hydrogen bonds involving the hydroxyl groups and oxime N atoms generate two...

An oxime-type polymer, (C10H11BrNO)n, has been unexpectedly obtained in the process of synthesis of bis(3- bromobenzaldehyde)O,O'- (hexane-1,6-diyl)dioxime. The crystal structure of the title compound has been determined by single-crystal X-ray diffraction method. The title compound crystallizes in a monoclinic crystal system, space group P2(1), wi...

The title compound, 6-ethoxy-4',6'-dibromo-2,2'-[ethylenedioxybis(nitrilomethylidyne)]diphenol with the molecular formula C18H18Br2N2O5, adopts an L-shaped configuration, in which the benzene units are approximately perpendicular, making a dihedral angle of 76.39(3)degrees. Intramolecular H-bonds are formed between the OH groups and the N atoms. In...

Supramolecular manganese(II)-Li(I) complex, [MnL(OH)(H2O)Li]n, has been prepared and characterized by elemental analyses, FTIR, UV-visible spectra, molar conductance measurement and X-ray crystallography (where H 2L = 4,4′,6,6'-tetrachloro-2,2′- [ethylenedioxybis(nitrilomethylidyne)]diphenol). The complex is self-assembled using various non-covalen...

The polymeric compound bis-zinc(II) tetraformate tetrahydrate with the m.f. [Zn2(HCOO-)4(H2O)4]n, was synthesized unexpectively by the reaction of zinc(II) acetate dihydrate with 2,2'-[1,1'-(propane-1,3-diyldioxy)bis(nitrilomethylidyne)]di-1-naphthol (H 2L) in ethanol. The molecule crystallizes in the monoclinic system, adopts a polymer conformatio...

In this study, N-(p-nitro)benzoyl-N'-(3-pyridyl)thiourea with the molecular formula C13H10N4O3S has been synthesized and characterized structurally by 1H NMR and X-ray crystallography. There is a strong intramolecular N2-H2···O1 hydrogen bond. In the crystal structure, intermolecular N1-H1···N4 hydrogen bonds link neighbouring molecules into an inf...

Determination of the structure of N-(4-pyridyl)benzamide with the molecular formula C12H10N2O that the conformations of the N-H and C=O bonds are anti to each other, The -NH-C=O- group makes dihedral angles of 33.5(2)° and 17.1(2)° with the benzoyl and pyridyl rings, respectively, while the angle between the benzoyl and pyridine rings is 49.9(6)°....

The compound, 5,5′-dihydroxy-2,2′-[1,1′-(propane-1,3- diyldioxydinitrilo)dimethylidyne]diphenol with the molecular formula C17H1 8N2O6, assumes a cis conguration in which two phenoloxime moieties adopts an extended form. The dihedral angle between the two benzene rings of the molecule is 1.83(3)°. There are two fairly strong intramolecular O3-H3···...

A supramolecular Cu(II) complex, [Cu(L)2(H2O)]·C2H5OH {HL = 4-[(ethoxyimino)(phenyl)methyl]-5-methyl-2-phenyl-1H-pyrazol-3(2H)-one]} was synthesized and characterized structurally. The structure of the Cu(II) complex consists of one Cu(II) atom, two bidentate L-units, one coordinated H2O and one crystallization ethanol molecule. The Cu(II) atom of...

The compound 4,4',6,6'-tetrachloro-2,2'-[(1,4-butylene) dioxybis(nitrilmethylidyne)]diphenol with the molecular formula C 18H16Cl4N2O4, was synthesized by the reaction of 3,5-dichloro-2-hydroxybenzaldehyde with 1,4-bis(aminooxy)butane in ethanol. The molecule is disposed about a crystallographic centre of symmetry and the molecule adopts an extende...

The compound, 5,5'-dinitro-2,2'-[(1,4-butylene)dioxybis(nitrilomethylidyne) ]diphenol, was synthesized by the reaction of 5-nitrosalicylaldehyde with 1,4-bis(aminooxy)butane in ethanol and characterized structurally by single crystal X-ray diffraction method. The molecule lies across a crystallographic inversion centre and assumes a Z configuration...