Synthesis and characterization of copper(I) derivatives with N-donor ligands - IV. ? poly(1H-pyrazol-1-yl)borates cyclohexylphosphine Cui, the X-ray crystal structures of [HB-(μ-pz)3-CuP(cy)3] and [HB-(μ-3,5 Me2pz)3-CuP(cy)3]

Article abstract of DOI:10.1016/0277-5387(96)00284-7

The binding abilities of several polypyrazolylborato ligands (Tp^#) toward nitrato bis(cyclohexylphosphine)Cu¹ have been investigated. Complexes of empirical formula (Cy₃P)₂Cu · Tp^# (Tp^# = Bp or pzTp) and (Cy₃P)Cu · Tp^# (Tp^# = Tp, Tp^Me, Tp^* or Tp^*cl) have been synthesized and characterized through aalytical and spectral (IR, ¹H, ¹³C and ³¹P NMR) measurements. The compound (Cy₃P)₂Cu · pzTp is fluxional at room temperature. In the crystal structure of the title compounds the copper atom is found in a strongly distorted tetrahedral coordination (the N - Cu - N and N - Cu - P angles range from 87.5(1) to 90.8(1)° and from 120.8(1) to 130.3(1)°, respectively. Comparison is made with related phosphino copper(I) derivatives. Copyright