title: Copper(I) complexes of bis(2-(diphenylphosphino)phenyl) ether: synthesis, reactivity, and theoretical calculations.
abstract: The tricoordinated cationic Cu(I) complex [Cu(kappa2-P,P'-DPEphos)(kappa1-P-DPEphos)][BF4] (1) (DPEphos = bis(2-(diphenylphosphino)phenyl) ether) containing a dangling phosphorus center was synthesized from the reaction of [Cu(CH3CN)4][BF4] with DPEphos in a 1:2 molar ratio in dichloromethane. When complex 1 is treated with MnO2, elemental sulfur, or selenium, the uncoordinated phosphorus atom undergoes oxidation to form a P=E bond resulting in the formation of complexes of the type [Cu(kappa2-P,P'-DPEphos)(kappa2-P,E-DPEphos-E)][BF4] (2, E = O; 3, E = S; 4, E = Se) containing a Cu-E bond. The zigzag polymeric CuI complex [Cu(kappa2-P,P'-DPEphos)(micro-4,4'-bpy)]n[BF4]n (5) was prepared by the reaction of [Cu(CH3CN)4][BF4] with DPEphos and 4,4'-bipyridine in an equimolar ratio. The stereochemical influences of DPEphos on its coordination behavior are examined by density functional theory calculations.
authors.affiliation: Phosphorus Laboratory, Department of Chemistry and National Single Crystal X-ray Diffraction Facility, Indian Institute of Technology, Bombay, Mumbai, India.
authors.forename: Ramalingam
authors.initials: R
authors.lastname: Venkateswaran
authors.forename: Maravanji S
authors.initials: MS
authors.lastname: Balakrishna
authors.forename: Shaikh M
authors.initials: SM
authors.lastname: Mobin
authors.forename: Heikki M
authors.initials: HM
authors.lastname: Tuononen