四面体手性簇合物CpMo(RCp)WFe(CO)_7(μ_3-S)和CpW(RCp)MoFe(CO)_7(μ_3-S)的合成及结构表征(R=CO_2Et,COMe,n-Bu)

Syntheses and Characterizations of Tetrahedral Chiral Clusters CpMo(RCp)WFe(CO)_7(μ3 - S) and CpW(RCp)MoFe(CO)_(μ3 - S) (R = CO_2Et, COMe, n - Bu)

利用等瓣置换法,通过M~*[(R-Cp)M^1(CO)_3](R=CO_2Et,COMe;M~*=Na;R=n-Bu;M~*=Li)与CpM^2FeCo(CO)_8(μ-S)反应,得到六种环戊二烯配体含有较大取代基的含硫四面体手性簇合物(R-Cp)M^1CpM^2Fe(CO)_7(μ_3-S)(Ⅰ-3:M^1=W,M^2=Mo,R=CO_2Et;Ⅱ:M^1=W,M^2=Mo,R=COMe;Ⅲ:M^1=W,M^2=Mo,R=n-Bu;Ⅳ-2:M^1=Mo,M^2=W,R=Co_2Et;V:M^1=MO,M^2=W,R=COMe;Ⅵ:M^1=Mo,M^2=W,R=n-Bu).通过元素分析,IR,~1H/^(13)C NMR对合成的簇合物结构进行了表征,并讨论了反应途径.

The reactions of M*[(R-Cp)M1(CO)3] (R=CO2Et, COMe; M* = Na; R=n-Bu; M*- La) with CpM2FeCo(CO)8(μ3 - S) have been carried out to give six tetrahedral chiral clusters (R-CP)M1CPM2Fe(CO)7(μ3-S) (I -3: M1 = W, M2 = Mo, R=CO2Et; II: M1 = W, M2 = Mo, R = COMe; II: M1 = W, M2 = Mo, R=n-Bu; IV-2 : M1=Mo, M2 = W, R=CO2Et; V: M1 = Mo, M2 = W, R = COMe; M : M1 = Mo, M2 = W, R = n - Bu) having large substituting group in cyclopentadienyl. These clusters were characterized by elemental analyses, IR and 1H/13C NMR. The possible reaction path - ways were also discussed herewith. The cluster M* [(R - Cp)M1(CO)3] can give the group [(R- Cp)M1(CO)2](d5 ML5) under reaction conditions, which have isolobal analogue tothe group Co(CO)3(d9 ML3) in cluster (R - Cp)M1CpM2Fe(CO)7(us - S) .The title clusters are derived from isolobal displacement reaction between the cluster M* [(R- Cp)M1(CO)3] and (R- Cp)M1Cp-M2Fe(CO)7(μ3-S).