Abstract
In this communication we report the synthesis and characterization of complexes which have C{sub 3} bridging units with metal-carbon triple bonds. In particular, methylene-bridged biscarbyne molecules serve as vehicles to prepare C{sub 3}-bridged complexes Tp`(CO){sub 2} Mo=V@C-C=V@CMo(O){sub 2}Tp`, Tp`(CO){sub 2}W=V@CC=V@CMo(0){sub 2} Tp`, and Tp`(O){sub 2}WC=V@CC=V@Mo(CO){sub 2}Tp` (Tp` = hydridotris(3,5-dimethylpyrazolyl)borate) as well as the ketone complex Tp`(CO){sub 2}W=V@CC(O)C=V@Mo(CO){sub 2}Tp`. This simple synthetic route provides access to dinuclear complexes with different metals. High-yield formation of Tp`(CO){sub 2}M=V@CCH{sub 2} C=V@Mo(CO){sub 2}Tp` provides an exciting generator for derivative dinuclear chemistry with three carbon atoms linking two metals. 24 refs.
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