Crystal and molecular structure of μ-tetrahydroborato-bis[bis(triphenylphosphine)copper(I)] perchlorate

μ-Tetrahydroborato-bis[bis(truphenylphosphine)copper(I)] perchlorate, CHBClCuOP, is orthorhombic, space group Pnnb with a = 23.17(1), b = 18.90(1), c = 14.94(1) Å, Z = 4. The structure was refined to R = 0.045 by full matrix least squares using 2203 observed reflections. Two tetrahedral Cu(I) atoms are linked by a tetrahedral BH group through bidentate hydrogen bridges. The coordination sphere about each copper is completed by two triphenylphosphines. The PCuP angles are distorted [119.7(1) and 124.5(1)°]. The former is the smallest angle observed for this type of structure