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Reaction of 2-(phenylazo)pyridine (pap) with [Os(PPh 3 ) 3 Br 2 ] afforded a mixed ligand complex of the type [Os(PPh 3 ) 2 (pap)Br 2 ]. The structure of this complex was determined by X-ray crystallography. The PPh 3 ligands are trans and the bromides are in cis positions. The pap ligand is coordinated to osmium as a bidentate N,N-donor forming...
A family of three mixed-ligand osmium complexes of type [Os(PPh 3 ) 2 (N-N)Br 2 ], where N-N=2,2'-bipyridine (bpy), 4,4'-dimethyl-2,2'-bipyridine (Me 2 bpy) and 1,10-phenanthroline (phen), have been synthesized and characterized. The complexes are diamagnetic (low-spin d 6 , S=0) and in dichloromethane solution they show intense MLCT transitions in the visible...
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