Silicagel support mediated nonphotolytic cleavage of the rhenium–rhenium bond of [{NC5H4NNC6H4(R)}(CO)3Re0]2. Synthesis of the monomeric species ReI{NC5H4NNC6H4(R)}(CO)3Cl, crystal structure, spectroscopic and electron-transfer properties
作者:R. Samanta、P. Munshi、B.K. Santra、N.K. Lokanath、M.A. Sridhar、J.S. Prasad、G.K. Lahiri
DOI:10.1016/s0022-328x(99)00016-9
日期:1999.5
chlorinated solvents (CHCl3 or CH2Cl2) the complex 1 transformed into a mononuclear complex of composition ReI(L)(CO)3Cl 2, where the cleavage of Re–Re bond of 1 and the oxidative addition of chlorine to the rhenium center have taken place consecutively. The molecular structure of the complex 2a (RH) has been determined by single crystal X-ray diffraction. The crystal lattice consists of two crystallographically
RE的反应2(CO)10与一个2 arylazopyridine配体,L [LNC 5 ħ 4 -NN-C 6 H ^ 4(R),RH,ö -Me /氯,米-Me / Cl]在干燥的THF中,在氮气氛围下,得到(L)(CO)3 Re 0 -Re 0(CO)3(L)1类型的金属-金属键合产物。在硅胶柱上,在氯化溶剂(CHCl 3或CH 2 Cl 2)存在下,配合物1转变为组成为Re I的单核配合物(L)(CO)3 Cl 2,其中1的Re-Re键断裂和氯向to中心的氧化加成相继发生。配合物2a(R = H)的分子结构已经通过单晶X射线衍射确定。晶格由两个晶体学上独立的Re(L 1)(CO)3 Cl分子组成,它们是不可重叠的镜像。d和l对映异构体以1:1的比例存在。配合物2显示不可逆的Re I →Re II氧化过程相对于SCE接近1.5 V,两次准可逆偶氮(NN)降低幅度相对于SCE为-0