Synthesis and Structural Features of the Nickel(II) Complex with Pincer 1,3-bis((diphenyl)phosphinoxy)Phenyl and Terminal Trifluoroacetate Ligands

The synthesis procedure is developed for the pincer 1,3-bis((diphenyl)phosphinoxy)phenyl complexa of nickel [{C6H3-1,3-(OPPh2)2}NiI] (1) by the direct interaction of 1,3-bis((diphenyl)phosphinoxy)benzene with [(CH3CN)3NiI2]. By the reaction of complex 1 with silver trifluoroacetate, new complex [{C6H3-1,3-(OPPh2)2}NiOC(O)CF3] (2) is obtained with a quantitative yield. The compounds are characterized by 1H, 13C{1H}, 31P{1H}, and 19F NMR spectroscopy. The structure of complex 2 is determined by single crystal X-ray diffraction.