Taku Fujino's research while affiliated with Niigata University and other places
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Publications (3)
Two mononuclear mixed-ligand ruthenium(III) complexes with oxalate dianion (ox2−) and acetylacetonate ion (2,4-pentanedionate, acac−), K2[Ru(ox)2(acac)] (1) and K[Ru(ox)(acac)2] (2), were prepared as a candidate for a building block. In fact, reaction of complex 2 with manganese(II) sulfate gave a heterometallic tetranuclear complex, TBA[MnII{(μ-ox...
An oxalate-bridged binuclear iron(III) complex, [(acac)2Fe(μ-ox)Fe(acac)2], (acac−=acetylacetonate anion and ox2−=oxalate anion) was prepared. The complex crystallized as two types of crystals under different conditions: one had 1,2-dichloroethane as a solvent molecule of crystallization 2, the other did not 1. Both compounds have been characterize...
A novel oxalate-bridged binuclear ruthenium(III) complex, [{Ru(acac)(2)}(2)(mu-ox)] (acac(-) = acetylacetonate and ox(2-) = oxalate), has been prepared via self-dimerization of K[Ru(acac)2(OX)l in aqueous solutions containing ferric salts as catalyst. The Ru-2 III,II mixed-valence species generated electrochemically with K-c = 10(5.0) for the compr...
Citations
... Thus, we can expect that this honeycomb geometry is chemically stable. Moreover, experiments [23] for the molecule [{Ru(acac) 2 } 2 (µ-ox)] − (acac − = acetylacetonate) observed an anisotropic spin interaction via oxalate due to the spin-orbit coupling of Ru 3+ FIG. 1. (Color online) (a) Geometric structure of honeycomb Ru-oxalate frameworks. White octahedra are RuO6 octahedra and carbon atoms are shown in brown. ...
... Therefore, we further carried out IR and UV-visible (UV-vis) spectroscopy analysis before and after battery cycles to see any other species present with the [Fe(acac) 3 ] system. The obtained electronic absorption spectrum of [Fe(acac) 3 ] was very similar to that previously reported in MeCN ( Figure S9), [19] and exhibited no change once the battery cycle was finished. A similar no change in spectra was also obtained for the analysis of IR spectra ( Figure S10). ...
... The examples available include mono-, di-and triamine derivatives such as the following complexes: [Ru III (en) 2 (η 2 -ox)] [Ru III (en)(η 2 -ox) 2 ] (en = ethylenediamine) [1,2], [Ru II (phen) 2 (η 2 -ox)] (phen = 1,10-phenanthroline) [3], [Ru II (bipy) 2 (η 2 -ox)] (bipy = 2,2′bipyridine) [4], [Ru III (η 2 -ox) 2 (py) 2 ] − (py = pyridine), [Ru III (η 2ox) 2 (anil) 2 ] − (anil = a substituted aniline) [5], [Ru II (tpy)(η 2 -ox)(H 2 O)] (tpy = 2,2′,2′'-terpyridine) [6], cis-[Ru II (η 1 -Hox)(en) 2 NO]Cl 2 and cis-[Ru II (η 1 -Hox)(η 2 -ox)(en)NO] [7]. In addition, the diaquo complex trans-[Ru III (η 2 -ox) 2 (H 2 O) 2 ] − [8,9] and acetylacetonato (acac − ) complexes, K 2 [Ru III (η 2 -ox) 2 (acac)] and K[Ru III (η 2 -ox)(acac) 2 ] [10] have been investigated. The acac complexes have been used in the construction of oligonuclear and polymeric species [10]. ...
