Abstract

A series of complexes of the form [Os(tpypz)(LLL)] 2+ , [Os(tpypz)(dppe)X] n+ , and [Os(tpypz)(PPh 3 ] 2 X] n+ (tpypz =2,3,5,6-tetrakis(2-pyridyl)pyrazine; tpy=2,2',2''-terpyridine; LLL=tpy, tpypz; dppe=bis(diphenylphosphino)-ethane; X=Cl - , CH 3 CN) have been prepared and characterized. These complexes represennt the first polyazine bridging ligand complexes in which the polyazine ligand is capable of bridging and the light-absorbing metal is also coordinated to a phosphine ligand

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