Half-sandwich rhodium poly-chalcogenide complexes and a carbon insertion into Te-Te bond  

作　　者：Qingan Kong Guoxin Jin 

机构地区：[1]Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China

出　　处：《Chinese Science Bulletin》2002年第3期187-189,共3页

基　　金：This work was supported by the National Natural Science Foundation of China (Grant No. 29925101) ; also by the Special Founds for the State Major Basic Research Projects (Grant No. G1999064800).

摘　　要：Treatment of CptRh(PMe3)Cl2(1) (Cpt=5η-tBu2C5H3) with [Et4N]2Se6 in DMF solution leads to the for-mation of cyclo-tetraselenido half-sandwich rhodium com-plexes CptRh(PMe3)(Se4) (2). The elimination of 2 with ex-cess of nBu3P results in cyclo-diselenido rhodium complex CptRh(PMe3)(Se2) (3). 1 reacts with [nBu4N]2Te5 in DMF solution to yield cyclo-ditellurido rhodium complex CptRh (PMe3)(Te2) (4) in which carbon atom from CH2C12 can be inserted into Te-Te bond to form CptRh(PMe3)(TeCH2Te) (5). The new complexes 2-5 have been characterized by their IR, EI-MS, and 1H, 13C, 31P, 103Rh NMR spectra as well as ele-mental analysis.Treatment of CptRh(PMe3)Cl2(l) (Cpt = 5 η-tBu2C5H3) with [Et4N]2Se6 in DMF solution leads to the formation of cyclo-tetraselenido half-sandwich rhodium complexes CptRh(PMe3)(Se4) (2). The elimination of 2 with excess of nBu3P results in cyclo-diselenido rhodium complex CptRh(PMe3)(Se2) (3). 1 reacts with [nBu4N]2Te5 in DMF solution to yield cyclo-ditellurido rhodium complex Cp_tRh (PMe3)(Te2) (4) in which carbon atom from CH2C12 can be inserted into Te-Te bond to form CptRh(PMe3)(TeCH2Te) (5). The new complexes 2–5 have been characterized by their IR, EI-MS, and 1H, 13C, 31P, 103Rh NMR spectra as well as elemental analysis.

关 键 词：half-sandvrich RHODIUM COMPLEXES polyselenido LIGANDS polytellurido LIGANDS INSERTION reaction 77 Se-NMR. 

分 类 号：O631[理学—高分子化学]