Copper(I) Isocyanide and Phosphane Complexes of Fluorinated Mono- and Bis(pyrazolyl)borates

New copper(I) complexes have been synthesized from the reaction between [Cu(CH(3)CN)(4)]PF(, or Cul, triphenylphosphane, tert-butyl isocyanide or cyclohexyl isocyanide co-hgands, and the fluorinated pyrazolylborate ligands sodium trihydro[5-(trifluoromethyl)pyrazol-1-yllborate and potassium dihydrobis[3-(trifluoromethyl)pyrazol-1-yllborate. These compounds have been characterized by elemental analysis, FT-IR and multinuclear ((1)H, (13)C, (91)F and (31)P) NMR spectroscopy, and ESI mass spectrometry. The solid-state structure of [[H(3)B[5-(CF(3))pzJJCu(PPh(3))(2)] is also reported. This complex features a K(2) N,H-bonded trihydro(pyrazolyl)borate hgand, a rare Cu-H13 bond, and a distorted, pseudotetrahedral copper atom with a large P-Cu-P angle. The solid state structures of [(H(2)B[3-(CF(3))PZ](2))Cu(CNtBu)(2)] and [IH(2)B[3-(CF(3))PZ](2))Cu(CNCY)(2)], which have pseudo-tetrahedral copper sites, are also reported. The bis(pyrazolyl)borate ligand in these complexes acts as a KIN,N' donor and adopts a flattened boat conformation. ((C) Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009)