fac-Trichloridotrispyrazolerhodium(III).

The title compound, fac-[RhCl3(pzH)3] (pzH = pyrazole) or fac-[RhCl3(C3H4N2)3], was prepared by treating RhCl3·3H2O with three equivalents of pyrazole. It contains a central RhIII atom coordinated in a facial manner by three pyrazole N atoms and three chloride ligands. As a result of their participation in weak intramolecular N—H...Cl hydrogen bonds, the pyrazole rings adopt a propeller-like arrangement. The mean planes of the pyrazole ligands exhibit dihedral angles of 26.83 (17), 2.03 (10) and 18.83 (14)° with the planes containing their coordinating N atoms, the RhIII atom and the acceptor Cl atoms of their individual N—H...Cl interactions. [ABSTRACT FROM AUTHOR]