The reactions of the mixture of 1- and 2-[2,2-bis（3,5-dimethylpyrazol-l-yl）-1-phenylethyl]-1,3-cyclopentadiene （bpzpcpH） and mixture of 1- and 2-[2,2-bis（3,5-dimethylpyrazol-l-yl）-I,l-diphenylethyl]-l,3-cyclopentadiene （bpzdpcpH） with W（CO）sTHF have been carried out. The former yields complex （bpzpcpH）W（CO）4, in which the bpzpcpH acts as a k2-（N,N） bidentate ligand, and the cyclopentadiene moiety does not participate in the coordination to the tungsten atom. While the latter gives complex （bpzdpcpH）W（CO）3, in which the cyclopentadiene moiety coordinates to the tungsten atom in η2-fashion instead of general η5-coordinated mode, causing bpzdpcpH to act as a tridentate k3-（π,N,N） ligand,
＜正＞Ferrocene and its derivatives have been extensively used in many fields due to their high stability in aque...
Ming-Xin Tan,Jun Zhang and Liang-Fu Tang~* Department of Chemistry,State Key Laboratory of Elemental-Organic Chemistry, Nankai University,Tianjin 300071
