[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.

{Tris[3-(adamantan-1-yl)-5-iso­propyl­pyrazol-1-yl-[kappa]N²]hydro­borato}thallium(I): the scorpionate with the most bulk?

A comparison is made of the thallium(I) complex of the `most hindered' tris­(3-adamantyl-5-iso­propyl­pyrazol-1-yl)hydro­borate ligand and that of the `super-hindered' tris­(7-tert-butyl­indazol-2-yl)hydro­borate ligand