ReCl 4 (THF) 2 in the presence of excess t -butylisocyanide by sodium amalgam produces pentakis ( t -butylisocyanide)chlororhenium(I), which has been converted to the corresponding methyl and ethyl derivatives. The reaction of pentakis(trimethylphosphine)chlororhenium(I) with Bu t NC gives partially substituted complexes, ReCl(CNBu t ) 2 (PMe 3 ) 3 and ReCl(CNBu t ) 3 (PMe 3 ) 2 . The structures of
摘要在过量叔丁基异
氰化物存在下,
汞齐
钠可还原ReCl 4(THF)2生成五(叔丁基异
氰化物)
氯r(I),已将其转化为相应的
甲基和乙基衍
生物。五(
三甲基膦)
氯r(I)与Bu t NC的反
应得到部分取代的配合物ReCl(CNBu t)2(
PMe 3)3和ReCl(CNBu t)3(
PMe 3)2。两种化合物的结构均已通过X射线方法确定。八面体ReCl(CNBu t)2(
PMe 3)3具有反式
异氰酸酯基,其中一个线性[CNC = 175(1)°]和一个稍微弯曲的[CNC = 159(1)°]。Re C键的长度在实验误差范围内相等[2.004(7),2.003(7)A]。在八面体的ReCl(CNBu t)3(
PMe 3)2中,由于无序,结构没有很好地定义,独特的
异氰酸酯向
氯的反式在
氮原子处显着弯曲[C Nˆ C = 141(6)°],对于其他两种
异氰酸酯而言,似乎显示出最短的Re C键长度,分别为1