Counterdisproportionation between cationic Ni(II) and phosphine Ni(0) complexes |
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| Authors: | V V Saraev P B Kraikivskii D A Matveev A S Kuzakov A I Vil’ms A A Fedonina |
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| Institution: | (1) Irkutsk State University, ul. Lermontova 126, Irkutsk, 664033, Russia |
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| Abstract: | The interaction of Ni(II) bis-tetrafluoroborate complexes Ni(Dppe)2](BF4)2 and Ni(CH3CN)6](BF4)2 (where Dppe = 1,2-bis(diphenylphosphino)ethane)) with Ni(0) phosphine complexes Ni(Dppe)2 and Ni(PPh3)4 in 1 : 1 mixture of toluene-acetonitrile was studied by the EPR method. The counter-disproportionation was shown to occur in a solution between the cationic Ni(II) complexes and the Ni(0) complexes to give Ni(I) complexes almost in quantitative amounts. The structures of the cationic Ni(I) complexes obtained were found to depend on both the solvent nature and the presence of a free phosphine in a solution. |
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