Synthesis, Structure, and H<sub>2</sub>O<sub>2</sub>-Dependent Catalytic Functions of Disulfide-Bridged Dicopper(I) and Related Thioether−Copper(I) and Thioether−Copper(II) Complexes
作者:Takehiro Ohta、Takashi Tachiyama、Kazunari Yoshizawa、Tokio Yamabe、Takeshi Uchida、Teizo Kitagawa
DOI:10.1021/ic000018a
日期:2000.9.18
105.76 (1) degrees, beta = 90.82 (2) degrees, gamma = 75.23 (1) degrees, and Z = 2; for 2, a = 17.78 (2) A, b = 17.70 (1) A, c = 15.75 (1) A, and Z = 8. Complex 1 is the first structurally characterized example obtained by the redox reaction Cu(II) + RSH-->Cu(I) + RSSR and has two independent structures (1a, 1b) which mainly differ in S-S bond distances, Cu(I)...Cu(I) separations, and C-S-S-C dihedral
对于1,a = 15.165(3)A,b = 22.185(4)A,c = 14.989(3)A,alpha = 105.76(1)度,beta = 90.82(2)度,γ= 75.23(1)度,并且Z = 2; 对于2,a = 17.78(2)A,b = 17.70(1)A,c = 15.75(1)A,并且Z =8。配合物1是通过氧化还原反应Cu(II)+获得的第一个结构表征的实例RSH-> Cu(I)+ RSSR并具有两个独立的结构(1a,1b),主要在SS键距,Cu(I)... Cu(I)间距和二硫键单元的CSSC二面角上不同。1a中的2.088(7)A和1b中的2.070(7)A的SS键距离表明双铜中心对SS键的显着激活。基于扩展的Hückel方法的片段分子轨道(FMO)分析和分子轨道重叠种群(MOOP)分析阐明了在1 Py2S-中形成二硫键的理想方法,而不是形成硫醇盐-铜(II)