[Bis(3,5-diisopropylpyrazol-1-yl-[kappa]N²)dihydroborato](triphenylphos­phane-[kappa]P)copper(I)

The title triphenylphosphane copper(I) complex, incorporating a bis(3,5-diisopropylpyrazol-1-yl)dihydroborate scorpionate ligand, was characterized by X-ray crystallographic analysis. The electron density of the Cu^I ion is discussed and compared to a series of analogous triphenylphosphane complexes.