三羰基环戊二烯基钼负离子与1，3－二卤丙烷的反应

Reaction of Tricarbonylcyclopentadienyl Molybdenum Anion with 1,3-Dihalopropane

三羰基环戊二烯基钼负离子与１，３－二卤丙烷在一缩二乙二醇二甲醚介质中反应，生成环卡宾配合物ＣｐＭｏＸ（ＣＯ）＿２ＣＯ（ＣＨ＿２）＿２ＣＨ２（Ｘ＝Ｂｒ，Ｉ）．硅桥连双环戊二烯基三羰基钼负离子与１，３－二卤丙烷顺利地进行类似反应，生成相应的硅桥连双［环卡宾钼配合物］──Ｅ［Ｃ＿５Ｈ＿４ＭｏＸ（ＣＯ）＿２］ＣＯ（ＣＨ＿２）＿２ＣＨ＿２］＿２（Ｅ＝Ｍｅ＿２Ｓｉ，Ｍｅ２ＳｉＳｉＭｅ＿２，Ｍｅ２ＳｉＯＳｉＭｅ＿２）．化合物硅氧硅桥联二茂二钼环卡宾配合物１１的晶体结构经Ｘ射线衍射测定，晶体属三斜晶系，Ｐ１空间群，晶体学数据：ａ＝０．８１８８（１）ｎｍ，ｂ＝１．０４５（３）ｎｍ，ｃ＝２．３２５２（４）ｎｍ，α＝９４．１４（２）°，β＝９４．０９（１）°，γ＝１０２．４８（２）°，Ｖ＝１．９３０６ｎｍ￣３，Ｚ＝２，Ｄ＿ｃ＝１．８５４ｇ／ｃｍ￣３。

Reaction of tricarbonylcyclopentadienyl molybdenum anion with X(CH_2)_3X(X=Br,I)in diglyme gave the cyclic carbene of molybdenum complex──CpMoX(CO)_2·CO(CH_2)_2CCH_2. The similar reaction of sila-bridged biscyclopentadienyltricarbonyl molybdenum anion with 1,3-dihalopropane proceeds smoothiy to afford the corresponding sila-bridged bis[cyclic carbene molybdenum]complex,E[C_5H_4MoX(CO)_2·CO(CH_2)_2CH_2]_2(E=Me_2Si,Me_2SiSiMe_2, Me_2SiOSiMe_2).The crystal structure of One(X=I) of the latter complexes was determined by X-ray crystallography. The crystal is triclinic, space group P 1 with α=0.818 8(1) nm,b=1.045 4(3) nm,c=2.332 5(4) nm,α=94.14(2)°,β=94.07(1)°,γ=102.48(2)°,V=1.930 6 nm￣3,Z=2,Dc=1.854 g/cm￣3。