Abstract
Reaction of copper(I) chloride and bromide, CuX (X = Cl or Br), with triphenylarsine in acetonitrile solution has resulted in two adducts, respectively, of 2:3:1, [(Ph 3As) 2Cu(μ-Cl) 2Cu(AsPh 3)(NCMe)] ( 1), and 1:1:2 stoichiometry, [(Ph 3As)(MeCN)Cu(μ-Br) 2Cu(NCMe)(AsPh 3)] · 2MeCN ( 2), characterized by elemental analysis, IR, ESI MS and NMR spectroscopy, and room temperature single crystal X-ray structure determinations. The environments of the two four-coordinate copper(I) atoms in 1 are different, being As 2Cu(μ-Cl) 2 and As,NCu(μ-Cl) 2. ( 2) is also binuclear, being a centrosymmetric dimer with the two four-coordinate, symmetry-related copper atoms having As,NCu(μ-Br) 2-environments.
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