Preparation and reduction of rhodium(III) complexes of a quadridentate Schiff-base ligand, and synthesis of organo-rhodium(III) derivatives

Abstract

The Rh III Schiff-base complexes RhSalenClPy and (PyH)(RhSalenCl 2), and the Rh IIRh II bonded dimer (RhSalenPy) 2 have been prepared, and their probable structures and reactivities are discussed. RhSalenClPy has been reduced using both 0.2% sodium amalgam and NaBH 4/PdCl 2 to produce solutions containing mono- and di-sodium derivatives, and the di-sodium derivative has been treated with a number of organic halides to yield a series of derivatives of the general formula R-RhSalenPy (R=CH 3, C 2H 5, n-C 3H 7, i-C 3H 7, n-C 4H 9, CH 3CO, CH 2CHCH 2 and C 6H 5CH 2). Spectral evidence confirms that these derivatives are RhC bonded.