Darstellung und NMR-spektroskopie organometallisch substituierter dikobalthexacarbonyl-alkin-komplexe
作者:Peter Galow、Angelika Sebald、Bernd Wrackmeyer
DOI:10.1016/0022-328x(83)87175-7
日期:1983.12
Dicobalthexacarbonyl η2-alkyne complexes with organometallic substituents (silyl, stannyl, boryl) were prepared. The reactions of bis(alkynyl)-element compounds (element E C, Si, Sn, B) with Co2(CO)8 were studied. In the case of E B only one alkynyl group reacts, in the case of E C or Sn the complexation of both alkynyl groups is preferred, whereas for E Si one or both alkynyl groups react
制备具有有机金属取代基(甲硅烷基,苯乙烯基,硼基)的二钴六羰基η2-炔烃配合物。研究了双(炔基)元素化合物(元素E,C,Si,Sn,B)与Co 2(CO)8的反应。在EB的情况下,仅一个炔基反应,在EC或Sn的情况下,两个炔基的络合是优选的,而对于ESi,一个或两个炔基反应。通常,炔基硼烷的反应性比有机甲硅烷基或苯乙烯基炔烃低得多。用1 H,13 C,59 Co和11 B,29 Si,119研究了配合物Sn NMR光谱。从NMR参数的讨论中得出的Co 2 C 2片段中键合情况的定性描述与文献报道的MO分析相符。