Summary
2-Pyridylphenylacetonitrile (ppa) is oxidized by copper(II) halides in 1,2-dichloroethane to 1,2-dicyano-1,2-diphenyl-1,2-di(2-pyridyl)ethane (dcppe), yielding 4∶1 complexes of dcppe with copper(II) dihalide, [CuX2(dcppe)4] (green). Nickel(II) and zinc(II) chlorides react with ppa giving complexes of a general formula [MCl2(ppa)2].
Dcppe reacts with copper(II), zinc(II) chlorides and copper(II) bromide yielding complexes of formulae [CuCl2(dcppe)4] (yellow), [ZnCl2(dcppe)2] and [CuBr2(dcppe)]. No reaction is observed with cobalt(II) and nickel(II) chlorides.
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Masaguer, J.R., Mendiola, M.A. & Molleda, C. Reactions of 2-pyridylphenylacetonitrile and 1,2-dicyano-1,2-diphenyl-1,2-di(2-pyridyl)ethane with cobalt(II), nickel(II), copper(II) and zinc(II) chlorides and copper(II) bromide. Transition Met Chem 10, 387–389 (1985). https://doi.org/10.1007/BF00618850
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DOI: https://doi.org/10.1007/BF00618850