A Convenient Route to Synthetic Analogues of the Oxidized Form of High-Potential Iron–Sulfur Proteins
作者:Kazuki Tanifuji、Norihiro Yamada、Tomoyuki Tajima、Takahiro Sasamori、Norihiro Tokitoh、Tsukasa Matsuo、Kohei Tamao、Yasuhiro Ohki、Kazuyuki Tatsumi
DOI:10.1021/ic402890k
日期:2014.4.21
An amide-bound [Fe4S4]3+ cluster, [Fe4S4N(SiMe3)2}4]− (1), was found to serve as a convenient precursor for synthetic analogues of the oxidized form of high-potential iron–sulfur proteins. Treatment of 1 with 4 equiv of bulky thiols led to replacement of the amide ligands with thiolates, giving rise to a series of [Fe4S4(SR)4]− clusters (R = Dmp (2a), Tbt (2b), Eind (2c), Dxp (2d), Dpp (2e); Dmp =
发现酰胺键结合的[Fe 4 S 4 ] 3+团簇[Fe 4 S 4 N(SiMe 3)2 } 4 ] -(1)可作为合成的氧化形式的类似物的便利前体。高潜力的铁硫蛋白。用4当量的大体积硫醇处理1导致用硫醇盐替换酰胺配体,从而产生一系列[Fe 4 S 4(SR)4 ] -簇(R = Dmp(2a),Tbt(2b),恩德(2c),Dxp(2d),Dpp(2e);Dmp = 2,6-二(间苯二甲酰基)苯基,Tbt = 2,4,6-三[双(三甲基甲硅烷基)甲基]苯基,Eind = 1,1,3,3,5,5,7,7-八乙基-小号-hydrindacen -4-基,DXP = 2,6-二(米-二甲苯)苯基,民进党= 2,6-二苯基苯基)。这些团簇的特征在于质谱,EPR谱和X射线晶体学。[Fe 4 S 4 ] 3 + / 2 +对的氧化还原电势为-0.82 V(2a),-0.86 V(2b),-0.84