期刊论文

KUANG, DZ

中文

化学学报

0567-7351

1994

52

9

853-857

南开大学元素有机化学所国家重点实验室资助的课题.；

本校为通讯机构

五甲二硅基环戊二烯与Mo（CO）6在甲苯中加热回流9h,生成[η-Me5Si2C5H4Mo（CO）3]2（1）,1的甲苯溶液进一步加热则发生脱羰而生成（?）（2）,2分别与Ph3P,HC≡CH及PhC≡CH反应,生成加成产物:（η-Me5Si2C5H4）（CO）2Mo-（PPh3）Mo（CO）2（PPh3）（C5H4Si2Me5-η）（3）,[η-Me5Si2C5H4Mo（CO2）]2(μ-HC≡CH（4）及[η-Me5Si2C5H4Mo（CO）2]2（μ—PhCCH）（5）.以元素分析,IR和1H NMR谱表征了它们的结构,并用X射线衍射测定了4的晶体结构.4的晶体属单斜晶系,空间群P21/α,晶胞数据:α=1.3139（2）,b=0.7350（1）,c=3.5247（9）nm;β=92.87（2）°,V=3.3996nm3,Z=4,Dc=1.41g·cm-3.

The toluene solution of pentamethyldisilanyl cyclopentadiene and Mo(CO)6 was heated at reflux for 9h to yield the dimolybdenum complex [eta-Me5Si2C5H4Mo(CO)3]2 (l). 1 was converted into the title compound (eta-Me5Si2C5H4) (CO)2Mo = Mo(CO)2 (C5H4Si2Me5-) (2) by thermal decarbonylation. 2 reacted respectively with Ph3P, HC = CH and PhC = CH afforded the addition products: [eta-Me5Si2C5H4Mo(CO)2PPh3]2(3), [(eta-Me5Si2C5H4)(CO)2Mo]2(mu-HC = CH) (4) and [(eta-Me5Si2C5H4)(CO)2Mo]2(mu-PhC = CH) (5). Their structures were characterized by elemental analyses, IR and H-1 NMR spectra. the crystal structu...