Complexes of Rh(C5Me5) with picolinic acid, pyrones and pyridinones
Abstract
Picolinic acid (pyridine-2-carboxylic acid), pyrones and pyridinones (HL) reacted with [{Rh(C5Me5)Cl2}2] and sodium methoxide to give complexes [Rh(C5Me5)Cl(L)] which are all soluble in water. The structures where HL = picolinic acid or 2-methylpyran-4-one have been determined by X-ray diffraction. The aquation of the complexes when dissolved in water has been examined by NMR spectroscopy and conductivity measurements and the results indicate an equilibrium between chloro and aqua species which is fast on the NMR time-scale.