SCHEDULED MAINTENANCE
Synthesis, structure and spectroscopic properties of [Cu3(µ-dpnapy)3(CH3CN)][ClO4]3·CH3CN (dpnapy = 7-diphenylphosphino-2,4-dimethyl-1,8-naphthyridine) with a linear copper atom array
Abstract
The co-ordination chemistry of 7-diphenylphosphino-2,4-dimethyl-1,8-naphthyridine (dpnapy) with CuI has been examined. Reaction of [Cu(CH3CN)4][ClO4] with dpnapy in CH3CN afforded [Cu3(µ-dpnapy)3(CH3CN)][ClO4]3 1[ClO4]3. The crystal structure of 1[ClO4]3·CH3CN reveals a linear Cu–Cu–Cu array with both trigonal and tetrahedral co-ordination modes for the copper atoms. The intramolecular Cu–Cu distances of 2.449(2) and 2.721(2) Å suggest that only two of the copper atoms have a bonding interaction. Complex 1 reacts with triphenylphosphine (PPh3) and 2,2′-bipyridine (bpy) to give [Cu(bpy)(dpnapy)2][ClO4] 2[ClO4] and [Cu2(µ-dpnapy)3][ClO4]2 3[ClO4]2, respectively. Spectroscopic properties of the complexes have been examined.
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