Gerd Meyer

Iowa State University | ISU · Department of Chemistry

Isonicotine amide, picoline amide, pyrazine 2-amide, 2- and 4-amino benzamides and various CuII salts were used to target CuII complexes of these ligands alongside with 1D and 2D coordination polymers. Under the criterion of obtaining crystalline and single phased materials a number of new compounds were reliably reproduced. Remarkably, for some of...

New organometallic complexes [M(dppe)(R)2] {where M = Pt or Pd, dppe = 1,2-bis(diphenylphosphano)ethane, and R = C6F4H-x (x = 6,5,4), C6F3H2-3,5, C6F3H2-5,6, C6F3H2-3,6, C6F4(OMe)-4, and C6F4(cyclo-C5H10N)-4, the numbers x refer to the positions of the protons in the polyfluoroaryl ligands} were synthesised either through transmetalation from the d...

The reaction between tridentate NNO donor hydrazone ligands, (E)-2-cyano-N’-(phenyl(pyridin-2-yl)methylene)acetohydrazide (HL¹) and (E)-2-cyano-N’-(1-(pyridin-2-yl)ethylidene)acetohydrazide (HL²), with MnCl2·4H2O in methanol resulted in [Mn(HL¹)Cl2(CH3OH)] (1) and [Mn(HL²)Cl2(CH3OH)] (2). Molecular structures of the complexes were determined by sin...

Wir berichten hier über ein hybrides organisch-anorganisches Polyoxometallat, Na2[(HGMP)2Mo5O15]⋅7 H2O (1) (mit GMP=Guanosinmonophosphat), das sich spontan zu einer Struktur zusammenfügt, deren Dimensionen jenen der natürlich vorkommenden linkshändigen Z-Form der DNA verblüffend ähnlich sind. Die Helixparameter in der Kristallstruktur dieser neuen...

Herein, we report a hybrid polyoxometalate organic–inorganic compound, Na2[(HGMP)2Mo5O15]⋅7 H2O (1; where GMP=guanosine monophosphate), which spontaneously assembles into a structure with dimensions that are strikingly similar to those of the naturally occurring left-handed Z-form of DNA. The helical parameters in the crystal structure of the new c...

With endohedral transition metal atoms T, the rare-earth elements, R, form clusters of six to eight R atoms. These heteroatomic clusters, {TRr} (r=CN(T)=6-8), are surrounded by halide ligands, X, to build cluster complexes, {TRr}Xx. They may be isolated as in the prolific {TR6}X12R and {TR6}X10 compound types. Edge and face sharing of (mainly) octa...

The synthesis, spectroscopy, structures and chemical reactivity of platinum(II) diolefin complexes cis-[(∥∧∥)PtCl2], cis-[(∥∧∥)PtCl(R)] and cis-[(∥∧∥)Pt(R)2] [∥∧∥ = chelate diolefin ligand: 1,5-cyclooctadiene (COD), 1,5-dimethylocta-1,5-diene (Me2COD), norbornadiene (NBD), 1,5-hexadiene (HEX), 3-allyloxypropene (All2O, diallyl ether), diallylamine...

Electron partition schemes are a beneficial means to systematize bonding networks and to identify structure-bonding relationships in polar intermetallics. One prolific class of polymetal networks with simple counterions is the broad family of transition-metal (T)-centered rare-earth metal (R) cluster halides (X), which can be isolated or condensed...

Comproportionation reactions of rare-earth metal trihalides (RX3) with the respective rare-earth metals (R) and transition metals (T) led to the formation of 22 oligomeric R cluster halides encapsulating T, in 19 cases for the first time. The structures of these compounds were determined by single-crystal X-ray diffraction and are composed of trime...

The reaction of HSC6F4H-4 and base with suitable platinum(II) chlorido precursor complexes leads to mononuclear complexes containing diimine ligands [(N^N)Pt(SC6F4H-4) 2], or [(N^N)Pt(Me)(SC6F4H-4)] (N^N = 2,2′-bipyridine (bpy), dipyrido[3,2-a:2′,3′-c]phenazine (dppz) or 11-trifluoromethyl-dipyrido[3,2-a:2′,3′-c]phenazine (CF 3dppz)), cycloocta-1,5...

Comproportionation reactions of YI3, Y, and Ni leads to the formation of the title compound (sealed Ta tube in an evacuated silica tube, 1050 °C, 1 week) which is isostructural with the prototypical [RuY6]I10.

A new vanadyl(V) complex with the tridentate, pincer-type O,S, O-ligand thiobis(phenolate), tbp, was synthesized from the reaction of vanadium(IV) oxide bis(acetylacetonate), VO(acac)2, and 2,2′-thio-bis(4- methylphenol), H2tbp, in refluxing methanol in high yield. Single-crystal X-ray diffraction structure analysis revealed for VO(tbp)(acac) that...

Salts of alkaline earth metal cations sequestered in dibenzo-18-crown-6 (Db18c6) and benzo-15- crown-5 (B15c5), respectively, with I5−, I7− and I82− as the anions, have been synthesized and their crystal structures determined by single-crystal X-ray diffraction. [Ca(Db18c6)(H2O)3](I5)2- (Db18c6)(H2O) (1): monoclinic, P21 (no. 4), a = 1322.1(2), b =...

A facile route to single crystals of Nb3Br8 by the reaction of NbBr5 with the wall of the niobium reaction vessel at 800 °C is reported. The crystal structure (a = 707.87(5), c = 3895.7(6) pm, R3m, Z = 6) was determined from diffractometer data; the crystal data are compared with those obtained from film data in 1966 which were of already high prec...

[{Hg(CF3)2}(ThpH)(H2O)](H2O) (1), [{Hg4(Thp)4}(ClO4)4(H2O)8](H2O)4 (2), [{Hg(ThpH)2} (NO3)](NO3) (3) and {Hg(Thp)Cl}(H2O) (4) (ThpH = theophylline, C7H8N4O2) have been synthesized by slow evaporation of aqueous solutions of the mercuric salts Hg(CF3)2, Hg(ClO4)2, Hg(NO3)2, or HgCl2 and theophylline. Their crystal structures were determined on the b...

Three new mixed-ligand complexes of silver(I) with 4,4'-bipyridine and derivates of benzoyltrifluoroacetone (Htfpb: 4,4,4-trifluoro-1-phenyl-1,3-butandione, Htfcpb: 4,4,4-trifluoro-1-(4-chlorophenyl)-1,3-butandione and Htfmpb: 4,4,4-trifluoro-1-(4-methoxyphenyl)-1,3-butandione) were synthesized and characterized by elemental analyses and H-1 NMR sp...

Rare Earth Elements, Halides, Cluster, Erbium Iodide Dicarbide Nitride, Crystal Structure [Er14(C2)2(N)2]l24 (triclinic, P I, a = 966.3(4) pm. b = 1027.6(2) pm. c = 1663.4(4) pm, « = 101.374(9)°, ß = 92.853(14)°, y = 112.83(2)°, Z = 2) is obtained as red-brown single crystals through a conproportionation reaction of E rl3 and erbium in the presence...

Some iodo elpasolites Cs 2 LiM III I 6 (M III = Sc, Lu, Tm, Ho) and Cs 2 NaM III I 6 (M III = Sc, Lu, Tm, Er) have been prepared for the first time. According to Guinier-Simon X-ray powder photographs they belong to the elpasolite type structure (cubic K 2 NaAlF 6 -type and its tetragonal distorted variety: Cs 2 NaMI 6 ) or to the Cs 2 LiGaF 6 -typ...

Tetrachloroaluminates, -ferrates and -gallates of formulae A

Bromo-Elpasolites of formulae Cs2LiMBr6 and Cs2NaMBr6 (M = Sc, Y, La-Lu, In, V, Cr) were prepared and investigated by powder X-ray diffraction. The compounds Cs2NaMBr6 (M = Ce-Lu, Sc, Y, In) as well as Cs2LiMBr6 (M = La-Er, Y) crystallize cubic facecentered (elpasolite type of structure); Cs2NaLaBr6 and low temperature forms of Cs2NaMBr6 (M = Ce-Gd...

Single crystals of CsPr 2 (CH 3 COO) 7 were obtained from an acetic acid solution of Pr(CH 3 COO) 3 • H 2 O and Cs 2 CO 3 in a molar ratio of 4:1 at 120°C. It crystallizes in the triclinic system, PĪ (no. 2), Z = 2, a = 1028.1(5), b = 1034.6(5), c = 1199.4(6) pm, α = 84.82(2), β = 67.07(3), γ = 76.01(2)°, V m = 343.3(3) cm ³ /mol, R = 0.031, R w =...

Pr(CH3COO)3· 1.5 H2O crystallizes with the triclinic system, P̄1̄ (no. 2), Z = 4, a = 844.2(4), b = 1009.8(5), c = 1340.1(7) pm, α = 87.10(5), β = 76.25(6), y = 75.65(2)°, Vm = 161.9(1) cm³/mol, R = 0.049, Rw = 0.035. The crystal structure contains centrosymmetric dimers {[Pr(CH3COO)4(H2O)]-}2 and one-dimensional chains ∞¹[Pr(CH3COO)2(H2O)]⁺ along...

The crystal structure of (AsPh 4 ) 2 [Re 3 Cl„(H 2 O)]·H 2 O, previously thought to be (AsPh 4 )2[Re 3 Cl 11 ], was redetermined from single-crystal four-circle diffractometer data. The crystal system is triclinic, PĪ, a = 983.1(6), b = 1200.5(6), c = 2566.2(10) pm, α = 92.67(4), β = 99.95(4), γ = 113.38(2)°, V m = 817.95(1) cm ³ /mol, R = 0.043,R...

Colourless single crystals of [Eu(CH 3 COO)2(H 2 O)3]Cl are obtained at about 5°C from a solution of EuCl 3 · 6 H 2 O in a mixture of acetone, tetrahydrofurane and acetanhydride (1:1:2) to which a small amount of water had been added. [Eu(CH 3 COO)2(H 2 O)3]Cl crystallizes in the monoclinic system, space group P2 1 /n (No. 14), a = 786.19(5), b = 7...

The preparation of the hitherto unknown bromo-elpasolites Cs

Dark red single crystals of Re

Pr(Man)3(ManH) and Er(Man)3(H2O) 2 (ManH = mandelic acid) have been synthesized by slow evaporation of aqueous solutions of rare-earth salts (Pr(OH)3, ErCl 3·6H2O) with mandelic acid (α-hydroxy-phenyl acetic acid, C8H8O3) and their crystal structures were determined on the basis of X-ray data. In the crystal structure of Pr(Man)3(ManH) (1) (monocli...

The synthesis and crystal structures of two new salts of chromium(III) with pyridine-2,6-dicarboxylic acid H2Pda (and 2,2’-bipyridyl, Bpy, as a co-ligand) are reported, (HPyz)[Cr(Pda)2](H2Pda)-(H2O)5 (1) and [Cr(Pda)(Bpy)(H2O)][Cr(Pda)2](H2O)2 (2). Both crystal structures contain the octahedral [Cr(Pda)2]⁻ anion with the pincer-type O,N,O-Pda²⁻ lig...

Comproportionation reactions of yttrium triiodide, yttrium and nickel led to the formation of the compound [NiY6]I10, which is isostructural with the prototypical [RuY6]I10. In particular, [NiY6]I10 is composed of isolated nickel centered yttrium octa­hedra (site symmetry -1) that are further surrounded by iodide ligands to construct a three-dimens...

Three new inorganic–organic hybrid compounds containing silver(I) coordinated to decatungstate and organic ligands are reported. Formation of one of them is induced by guanine with high chemoselectivity. The oxidation state of tungsten in the thermal decomposition products is dependent on the organic ligands in the coordination sphere of silver(I).

Nimm 2! Die „reduzierten“, zweiwertigen Lanthanide M2+ haben die Grundzustands-Elektronenkonfigurationen 4fn+15d0 (blau) oder 4fn5d1 (rot). Die roten können in die großvolumigen Anionen [M(Cp′)3]− (Cp′=(C5H4SiMe3)) eingebaut werden, wobei ein d1-Elektron in einem z2-artigen SOMO eingefangen wird. Diese Chemie wurde nun auf das seit langem gesuchte...

It takes two to tango: The "reduced", divalent lanthanides M(2+) have electronic ground-state configurations of either 4f(n+1) 5d(0) (blue) or 4f(n) 5d(1) (red). The latter may be incorporated in the spacious anions [M(Cp')3 ](-) and thus the single d(1) trapped in a z(2) like SOMO. This chemistry has now been transcribed to U(2+) (5f(3) 6d(1) ), a...

Source of material: Na2[Pr(N03)5] · H2O crystallizes from a solution of PtôOi 1 and NaNC>3 in conc. HNO3 upon slow evaporation in a desiccator over solid KOH. It is also obtained from a solution of Na3Nd2(N03>9 in acetonitrile by isothermic evaporation in a slow stream of argon. In the crystal structure of Na2[Pr(N03)s] • H2O Pr 3+ is (as Nd 3+ in...

Three new compounds, (GuaH)4[W10O32](H2O)4 (1), (ThbH)3(H3O)[(W10O32](H2O)7.5 (2) and (ThbH)2[W6O19](H2O)2 (3) (GuaH = guaninium, thbH = theobrominium) were synthesized in acidified acetonitrile solutions. The polyoxotungstates in all of these compounds are surrounded by an organic matrix consisting of protonated purine bases and water molecules. T...

Reaction of YI3 with bzc (bzc: benzo-15-crown-5), NaCl, and iodine in MeOH lead to the formation of dark red to black plates of [(H5O2)(I2bzc)2] [Cl(I2)4] (I) and yellow needles or plates of [(H5O2)(I2bzc)2] [ICl2](I2bzc)2 (II).

LnTeCl (Ln: La, Ce, Pr, Nd) compounds are obtained as single crystals and/or powder samples by the reaction of anhydrous LnCl3, Ln metal, and Te (sealed Ta tubes in evacuated silica tubes, 1050 °C, 5 d, heating and cooling rate of 50 K/h).

C3I10Pr7, triclinic, P1̄ (no. 2), a = 9.604(2) Å, b = 11.577(2) Å, c = 13.796(2) Å, α = 80.05(1)°, β = 71.87(1)°, γ = 65.89(1)°, V = 1328.7 Å3, Z = 2, Rgt(F) = 0.050, wRref(F 2) = 0.145, T = 170 K.

C4H12ClGdO7, monoclinic, P121/c1 (no. 14), a = 7.8213(5) Å, b = 7.8625(5) Å, c = 18.100(1) Å, β = 107.037(5)°, V = 1064.2 ų, Z = 4, Rgt(F) = 0.031, wRref(F²) = 0.100, T = 150 K.

Polyoxomolybdates tend to re-agglomerate to β-octamolybdate upon reaction with Ag+ under hydrothermal conditions and in organic solvents. Consistent with this tendency, a new coordination polymer [Ag(PhCN)(thb)]4[β-Mo8O26](PhCN)2 (thb = theobromine) (1) was obtained and characterized by single crystal XRD, powder XRD, DTA/TG, IR, UV/Vis, and elemen...

The structures of three adventitiously obtained peroxolanthanoid complexes have been determined, namely, [Yb2(Cp)4(μ-O)2/3(μ-O2)1/3(thf)2] (1) (Cp = cyclopentadienyl; thf = tetrahydrofuran), which has disorder between the bridging oxide and peroxide, [Nd2(o-PhPhForm)4(thf)4(μ-O2)] (2) (o-PhPhForm = N,N′-bis(2-phenylphenyl)formamidinate), and [Eu4(F...

Reactions of 8-hydroxyquinoline (HOQ) with elemental rare-earth and transition metal combinations or alloys at 200-300 degrees C yielded a variety of complexes, albeit in very low yields, including two structurally characterised homometallic complexes containing an unexpected biquinolinolate ligand. Reaction of HOQ with SmCo5 alloy gives rise to th...

The first rare-earth metal telluride chlorides, RTeCl with R = La, Ce, Pr, Nd, were obtained as single crystals and/or powder samples by the reaction of anhydrous rare-earth trichlorides, RCl3, with the respective rare-earth metals R and elemental tellurium (Te) in sealed tantalum containers at temperatures as high as 1050 °C. All four telluride-ch...

Eight cluster complex compounds with the composition {TR6}X12R (T=Fe, Co, Ru, Os, Ir, R=Dy, Ho, Er, X=Br, I) exhibiting the same crystal structure, {BSc6}Cl12Sc type, were investigated by magnetometry. A diversity of magnetic properties was recorded depending on chemical compositions. Long range spin order is suggested for {CoHo6}I12Ho, {FeHo6}I12H...

Planar statt tetraedrisch! Das Polyinterhalogenid [Cl(I2)4]− , das in der Gasphase tetraedrisch wäre, nimmt in den Kristallen von [(H5O2)(I2b15c5)2][Cl(I2)4] eine planare Struktur ein (I2b15c5=Diiodbenzo‐15‐Krone‐5). Neben anderen Effekten wie elektrostatischer Anziehung zwischen kationischen und planaren anionischen Schichten spielen auch Iod‐Iod‐...

All square: The polyinterhalide [Cl(I2 )4 ](-) is square-planar in the crystal structure of [(H5 O2 )(I2 b15c5)2 ][Cl(I2 )4 ] (I2 b15c5=diiodobenzo-15-crown-5), although it would be tetrahedral in the gas phase. Along with other effects, such as electrostatic attractions between the cationic and planar anionic layers, iodine-iodine bonding with σ-h...

The new compound {IrCe3}I3 was synthesized by comproportionation reactions of stoichiometric ratios of CeI3, Ce and Ir. Single crystal X-ray diffraction structure determination shows that {IrCe3}I3 crystallizes with the cubic variant of the {TR3}X3 family (I4132, Z=8, a=12.450(1) Å, V=1930.0(3) Å3) and is isostructural with the recently reported {R...

The reaction of HSC6F4H-4 or KSC6F4H-4 with the palladium(II) complexes [(NN)PdCl2] [NN = 2,2′-bipyridine (bpy) or 1,10-phenanthroline (phen)] leads to the mononuclear palladium complexes [(NN)Pd(SC6F4H-4)2] or [(NN)PdCl(SC6F4H-4)], whereas the reaction with [(COD)PdCl2] (COD = 1,5-cyclooctadiene) results in the loss of COD and the formation of the...

Single crystals of (H3O)2Cr4O13 are obtained from an aqueous mother liquor containing Na2Cr2O7, CrO3, AgClO4, and theobromine in HNO3 after 6 months.

The co-crystal, C7H9N4O2 +·ClO4 −·C20H24O6·3.25H2O, consists of theobrominium (3,7-di­methyl-2,6-dioxo-1H-purin-9-ium) cations, perchlorate anions and dibenzo-18-crown-6 and water mol­ecules. The crown ether is in a bent conformation, in which the planes of the aromatic rings subtend an angle of 63.7 (1)°. Inter­molecular O—H⋯O hydrogen bonding bet...

Mitteilungsblatt 34, CHEMKON 20: Herzliche Glückwünsche!

A new strategy for the synthesis of inorganicorganic silver(I)-polyoxometalate materials was developed. The approach takes advantage of the ability of purine bases to build strong networks using them as ligands to silver(I). Its major experimental strong point is the facile preparation of target compounds from aqueous solutions from basic starting...

The crystal structure of (H(3)O)(2)Cr(4)O(13) is isotypic with K(2)Cr(4)O(13). The finite tetra-chromate anion in the title structure consists of four vertex-sharing CrO(4) tetra-hedra and exhibits a typical zigzag arrangement. The crystal packing is stabilized by hydrogen bonds between these anions and hydro-nium cations. The two different hydro-n...

The crystal structure of (H3O)2Cr4O13 is isotypic with K2Cr4O13. The finite tetra­chromate anion in the title structure consists of four vertex-sharing CrO4 tetra­hedra and exhibits a typical zigzag arrangement. The crystal packing is stabilized by hydrogen bonds between these anions and hydro­nium cations. The two different hydro­nium cations are...

The new three-dimensional coordination polymer {[Bi(NNO)2(NO3)]·1.5H2O (1, NNO− = nicotinate N-oxide) was synthesized and characterized by elemental analysis, IR and 1H-NMR spectroscopy, as well as single-crystal X-ray diffraction analysis. 1 crystallizes in the monoclinic space group C2/c. The crystal structure consists of a rectangular-shaped gri...

All square: The polyinterhalide [Cl(I2)4]− is square‐planar in the crystal structure of [(H5O2)(I2b15c5)2][Cl(I2)4] (I2b15c5=diiodobenzo‐15‐crown‐5), although it would be tetrahedral in the gas phase. Along with other effects, such as electrostatic attractions between the cationic and planar anionic layers, iodine–iodine bonding with σ‐hole interac...

Divalent rare earth metals (Sc, Y, and the lanthanides) are known in halides almost throughout the whole series. Two classes may be distinguished: RX2 = (R2+)(X−)2 type dihalides, in which R2+ has the electronic configuration [Xe]6s05d04fn. Their structural behavior parallels that of the heavier alkaline-earth metal halides; for example, EuBr2 and...

The new condensed double-chain cluster complex compound {Ir2Gd5}Br5 was obtained from a reaction of GdBr3 with metallic gadolinium and iridium at elevated temperatures. The thin black needles crystallize with the orthorhombic crystal system, space group Pnma(no. 62); a = 1255.4(1) pm, b = 414.05(3) pm, c = 2633.8(3) pm,Z = 4, R1/wR2 = 0.0504/0.0346...

The structures of two new cubic {TnLa(3)}Br(3) (Tn = Ru, Ir; I4(1)32, Z = 8; Tn = Ru: a = 12.1247(16) Å, V = 1782.4(4) Å(3); Tn = Ir: a = 12.1738(19) Å, V = 1804.2(5) Å(3)) compounds belonging to a family of reduced rare-earth metal halides were determined by single-crystal X-ray diffraction. Interestingly, the isoelectronic compound {RuLa(3)}I(3)...

Comproportionation reactions of rare-earth metal trihalides, RX3, with the respective R metal in the presence of a transition metal Z, preferably from group 8 through 10, yielded single crystals of 31 {ZR6}X12R and 22 {ZR6}X10 type compounds, in most cases for the first time, especially with R = Tb, Dy, Ho, and Er. These are compared with literatur...

The new intermetallic compound Ru11Lu20 was obtained as black single crystals during an attempted comproportionation reaction of lutetium(III) chloride, LuCl3, with metallic lutetium in the presence of ruthenium metal at 950 °C. Ru11Lu20 crystallizes with the trigonal space group R-3, Z = 6, a = 1255.1(1), c = 2973.0(4) pm, R1 for all data: 0.0380....

Two coordination polymers (CPs) based on a AgI/perfluoro-β-diketonate/N-donor ligand, [Ag(4,4′-bpy)(hfa)]n, (1) and [Ag(4,4′-bpy)(ttfa)]n (2), where 4,4′-bpy is 4,4′-bipyridine, Hhfa is hexafluoroacetylacetone, and Httfa is thenoyltrifluoracetylacetone, were prepared and characterized by elemental analysis, IR and 1H NMR spectroscopy as well as X-r...

{Os5Lu20}I-24 was obtained from a conproportionation reaction of lutetium and lutetium triiodide in the presence of osmium in an arc-welded tantalum container at 850-1200 degrees C. The crystal structure has been determined by single-crystal X-ray diffraction analysis. Square antiprisms and cubes of lutetium atoms in a 4: 1 ratio share common squar...

The first ternary lanthanide telluride-bromide La 3 Te 4 Br was obtained from a mixture of LaTe and LaBr 3 (in the presence of iridium) in a sealed tantalum container at elevated temperatures. The crystal structure (orthorhombic, Pnma, a = 1634.3(2), b = 435.0(1), c = 1426.6(2) pm, Z = 4, R 1 (I 0 > 2(I 0)) = 0.0349) is built from dicapped trigona...

The ternary chloride Na3MoCl6 is obtained as red crystals from a disproportionation reaction of molybdenum dichloride, {Mo6}Cl12, in an acidic NaCl/AlCl3 melt at 350 °C. The crystal structure (trigonal, P-31c, a = 687.1(1), c = 1225.3(2) pm, Z = 2, V = 501,0(1) 106 pm3) is that of Na3CrCl6: within a hexagonal closest-packing of chloride ions two th...

A reaction of YI3, dibenzo-24-crown-8 and iodine in ethanol yielded, as a by-product, red single crystals of (I-2)@(db24c8). In the triclinic crystal, P-1, a = 485.0(1), b = 1203.7(3), c = 1280.4(2) pm, alpha = 64.56(2)degrees, beta = 86.82(2)degrees, gamma = 83.89(2)degrees, V = 671.1(2) x 10(6) pm(3), Z = 1, R-1= 0.0301 for 1965 reflections with...

The reduction of hafnium tetraiodide, HfI4, with aluminum at 600 °C or 850 °C in the presence of a NaI flux resulted in black single crystals of Hf0.86(1)I3. This composition corresponds well to the upper end of the non-stoichiometry range 0.89 ≤ x ≤ 1.00 previously reported for HfxI3. The crystal structure (a = 1250.3(2), c = 1999.6(3) pm, R-3m, Z...

The reaction of bismuth triiodide with iodine and benzo-15-crown-5 in ethanol/dichloromethane yielded red single crystals of (b15c5)BiI3(I2) (monoclinic, P21/c (no. 14), a = 1376.9(1), b = 1172.7(1), c = 1700.2(2) pm, b = 115.197(6), V = 2484.1(4)·106 pm3, Z = 4). Neutral pseudo-octahedral complexes (b15c5)BiI3 are connected by secondary bonding in...

The crown-ethers 12-crown-4 (12c4) and benzo-12-crown-4 (b12c4) encapsulate divalent manganese, iron, cobalt, and nickel cations building large sandwich-type dications with square-antiprismatic coordination polyhedra; benzo-15-crown-5 (b15c5) forms in-cavity complexes with six-plus-one coordinate Mn(II) and Co(II). The anions are a variety of polyi...

The salts [Cnmim]2[Mo6Cl14] (mim = methylimidazolium; n = 4, 6, 12, 16, 18) have been obtained by reaction of CnmimCl with MoCl2. Thermal analysis shows the melting point decreases with increasing alkyl chain length of the cation. The imidazolium chloromolybdates(II) with n = 6–18 decompose above 340 °C; [C18mim]2[Mo6Cl14] is thermally stable up to...

The title compound, [Cu(2)(CH(3)CO(2))(4)(C(7)H(5)NS)(2)] or [(C(7)H(5)NS)Cu](2)(μ-O(2)CCH(3))(4), crystallizes with one mol-ecule per unit cell. The coordination number of copper is six with four basal O atoms, one axial N atom and one axial Cu atom. Four acetate ligands act as bidentate linker and connect two Cu atoms, with a crystallographic inv...

Reasonable starting materials for the synthesis of lanthanide(III) chlorides and bromides, MX3 (X=CI, Br), are the metals, M, or the sesquioxides, M203. (In the cases of cerium, praseodymium, and terbium, where the sesquioxides are not commercially available, the oxides CeO2, “Pr6O11”, and “Tb407” may be used as well.) Of these starting materials,...

Studies of the absorption and temperature dependence of photoluminescence spectra and luminescence decay times of the intra-shell f–f transitions (2F5/2 ↔ 2F7/2) of Yb3+ ions in K2LaCl5:Yb3+ powders with 5, 10, 15 and 25% of ytterbium are presented. The spectroscopic properties of the powders with different ytterbium content are compared. Experimen...

The synthesis and crystal structures of two new salts of chromium(III) with pyridine-2,6-dicarboxylic acid H2Pda (and 2,2′-bipyridyl, Bpy, as a co-ligand) are reported, (HPyz)[Cr(Pda)2](H2Pda)- (H2O)5 (1) and [Cr(Pda)(Bpy)(H2O)][Cr(Pda) 2](H2O)2 (2). Both crystal structures contain the octahedral [Cr(Pda)2]? anion with the pincer-type O,N,O-Pda 2?...

The compound [Cu(TAMEN)][Cu(NCS)2Cl](DMF)2 containing the Mannich base N,N′-tetra-(4-antipyrylmethyl)-1,2-diaminoethane (TAMEN), as ligand, was synthesized and characterized by conductometric, magnetic, electronic and infrared spectroscopic properties. The single-crystal X-ray structure shows the presence of two well defined complex units, [Cu(TAME...

Single crystals of the title compound, tris-odium hexa-chloridodysprosate, Na(3)DyCl(6), were obtained as a by-product of synthesis using dysprosium(III) chloride and sodium chloride among others. The monoclinic structure with its typical β angle close to 90° [90.823 (4)°] is isotypic with the mineral cryolite (Na(3)AlF(6)) and the high-temperature...

New Ln(x)Bi(2-x)Se(3) (Ln: Sm3+, Eu3+, Gd3+, Tb3+) based nanomaterials were synthesized by a co-reduction method. Powder XRD patterns indicate that the Ln(x)Bi(2-x)Se(3) crystals (Ln = Sm3+, Eu3+, x = 0.00-0.44 and Ln = Gd3+, Tb3+, x = 0.00-0.50) are isostructural with Bi2Se3. The cell parameter c decreases for Ln = Eu3+, Gd3+, Tb3+ upon increasing...