Dioxo-Molybdenum(VI) and Mono-oxo-Molybdenum(IV) Complexes Supported by New Aliphatic Dithiolene Ligands: New Models with Weakened MoO Bond Characters for the Arsenite Oxidase Active Site
作者:Hideki Sugimoto、Makoto Harihara、Motoo Shiro、Kunihisa Sugimoto、Koji Tanaka、Hiroyuki Miyake、Hiroshi Tsukube
DOI:10.1021/ic050234p
日期:2005.9.1
The cis-dioxo-molybdenum(VI) complexes, [MoO2(L(H))2]2- (1b), [MoO2(L(S))(2)]2- (2b), and [MoO2(L(O))2]2- (3b) (L(H) = cyclohexene-1,2-dithiolate, L(S) = 2,3-dihydro-2H-thiopyran-4,5-dithiolate, and L(O) = 2,3-dihydro-2H-pyran-4,5-dithiolate), with new aliphatic dithiolene ligands were prepared and investigated by infrared (IR) and UV-vis spectroscopic and electrochemical methods. The mono-oxo-molybdenum(IV)
顺式-二氧杂钼(VI)络合物[MoO2(L(H))2] 2-(1b),[MoO2(L(S))(2)] 2-(2b)和[MoO2(L (O))2] 2-(3b)(L(H)=环己烯-1,2-二硫代酸酯,L(S)= 2,3-二氢-2H-硫代吡喃-4,5-二硫代酸酯,和L(O )= 2,3-二氢-2H-吡喃-4,5-二硫代磺酸盐),带有新的脂肪族二硫代烯配体,并通过红外(IR)和紫外可见分光光度法和电化学方法进行了研究。单氧代钼(IV)络合物[MoO(L(H))2] 2-(1a),[MoO(L(S))2] 2-(2a)和[MoO(L(O) ))2] 2-(3a)通过X射线晶体结构测定进一步表征。红外和共振拉曼光谱研究表明,这些顺式-二氧钼(VI)配合物(1b-3b)的Mo = O键比普通的Mo(VI)O2配合物弱。配合物1b-3b在可见区域也表现出强吸收带,该吸收带被指定为从二硫代烯配体到顺式-M