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論文
論文
1. Dinuclear manganese and cobalt complexes with cyclic polyoxovanadate ligands: Synthesis and characterization of [Mn2V10O 30]6- and [Co2(H2O) 2V10O30]6-
Inami, Shinnosuke ; Nishio, Masaki ; Hayashi, Yoshihito ; Isobe, Kiyoshi ; Kameda, Hiroyuki ; Shimoda, Tatsuya
出版情報: European Journal of Inorganic Chemistry.  pp.5253-5258,  2009-11-26.  Wiley-Blackwell
URL: http://hdl.handle.net/2297/20361
概要: 金沢大学理工研究域物質化学系<br />An all-inorganic complex, [Mn2{(CVO3) 5}2]6- (1), was synthesized, and the structure determination r … eveals a dinuclear manganese complex coordinated by two cyclic pentavanadate ligands. The cyclic pentavanadate units sandwich the edge-sharing octahedral dimanganese core through, coordination of the oxido group of the pentavanadate. A. dinuclear cobalt complex with, a cyclic decavanadate, [Co 2(OH2)2(VO3)10]6- (2), was also synthesized. The structure analysis reveals a dinuclear cobalt complex with a macrocyclic decavanadate, which is composed of 10 VO4 units joined by the vertex. Sharings. The CoO6 octahedrons are edge-shared, with each cobalt octahedron coordinated to five oxido groups from the decavanadate. The remaining site is occupied by - water. The coordinated water molecules are supported with hydrogen bonds in two directions. Complex 2 in acetonitrile shows no reactivity with dioxygen even at low temperature, and the cyclic voltammogram of 2 shows no redox chemistry in acetonitrile. Complex 2 exhibits chromism by water exposure both, in the solid state and. in acetonitrile. Complex 2 is green-yellow in color, and. the addition of water causes the complex to turn brown. After heating the sample, it returns to its original color in a reversible manner. The EXAFS data in acetonitrile is also reported, and is consistent with the solid-state structure. © Wiley-VCH Verlag GmbH & Co. KGaA. 続きを見る
2.

論文
論文
2. Synthesis of a bowl-type dodecavanadate by the coupling reaction of alkoxohexavanadate and discovery of a chiral octadecavanadate
Domae, Kyosuke ; Uchimura, Daisuke ; Koyama, Yuuki ; Inami, Shinnosuke ; Hayashi, Yoshihito ; Isobe, Kiyoshi ; Kameda, Hiroyuki ; Shimoda, Tatsuya
出版情報: Pure and Applied Chemistry.  81  pp.1323-1330,  2009-01-01.  International Union of Pure and Applied Chemistry
URL: http://hdl.handle.net/2297/19143
概要: 金沢大学理工研究域物質化学系<br />A new route to an alkoxohexavanadate species leads to the isolation of a bowl-type dodecavanadate wi … thout a guest molecule in the cavity. The 1D tetravanadate, [V4O11]2-, is a good precursor for the alkoxohexavanadate, [V6O13(OCH3)6]2-, which is then utilized for the [V6 + V6] coupling reaction to form the dodecavanadate, [V12O42]4-, with a capped dichloromethane molecule at the cavity entrance. We also obtained structural information on a newly discovered octadecavanadate, [V18O46(NO3)]5-, in both the solid and solution states through extended X-ray absorption fine structure (EXAFS) studies. The existence of the chiral inorganic species in acetonitrile with double-stranded V8 chains was confirmed through EXAFS oscillations. © 2009 IUPAC. 続きを見る