system. cis- and trans-5 have been separated and reacted with CCl4 to give [W(CO)3Cl}2(μ-η5:η5-Cp2Cp)] (cis- or trans-7). Reaction of [Mo(CO)3X}2(μ-η5:η5-CpnCp)] (n = 1, X = H (1), Cl (3); n = 2, X = H (2), Cl (4)) with CNtBu gives [Mo(CO)2(CNtBu)X}2(μ-η5:η5-CpnCp)] (8−11). Reaction of 9 with KH gives K2[Mo(CO)2(CNtBu)}2(μ-η5:η5-Cp2Cp)] (12). The cis isomers of the chloro derivatives 4, 7, or 11
本文介绍了由Cp 1 Cp [Cp 1 Cp =(C 5 H 4)2(SiMe 2)]或Cp 2 Cp [Cp 2 Cp =(C 5 H 3)2桥接的新型双核Mo和W络合物的制备(SiMe 2)2 ]
配体。[W(CO)3 H} 2(μ-η 5:η 5 -Cp 2的Cp)](5)或K 2 [W(CO)3 } 2(μ-η 5:η 5 -Cp[2 Cp)](6)是通过[W(CO)3(NCMe)3 ]与HCp 2 CpH或K 2(Cp 2 Cp)分别作为异构体的顺式-反式混合物进行反应而获得的,两种
金属相对于Cp 2 Cp系统的立体定位。顺式-和反式- 5已被分离,并与CCl反应4,得到[W(CO)3
氯} 2(μ-η 5:η 5 -Cp 2的Cp)](顺式-或反式- 7)。的反应[沫(CO)3 X} 2(μ-η 5:η 5 -Cp Ñ的Cp)](Ñ = 1,X = H(1),CL(3); ñ