Synthesis and characterization of some imidazolium complexes of rhodium

Abstract

Rhodium(III) chloride is found to form complexes of the types (LH)₂[RhCl₅L].2H₂O, (LH)₂[RhCl₄L'2).2H₂O and (L'H)[RhCl₄L'₂], where L = 2-methylimidazole(2-Melm), 1 ,2-

dimethylimidazole (1,2-Me₂Im) ; L' = imidazole (Im), 1-<i>n</i>-butylimidazole (1-<i>n</i>-BuIm). The compounds have been characterized by elemental analyses, molar conductance measurements, IR, UV-visible and ¹H NMR spectral studies. The compounds have octahedral geometry with pyridine nitrogen of imidazoles as donor site. Thermal studies indicate continuous loss of ligands with formation of Rh₂O₃ above 780°C.