Publication Details (including relevant citation information):
Wong, D. M.; Simpson, S. J. Polyhedron 2006, 25, 2303-2317.
Diastereomeric salts [(η5-C5H5)Ru(PPh3)(CNtBu)(NH2R)]PF6 containing both a chiral metal centre and an α-chiral amine ligand have been prepared. The use of diamagnetic anisotropy in 1H NMR spectroscopy to distinguish the diastereomers has been supported by single crystal X-ray crystallography. The structures of the salts containing the ligands cyclohexylamine and a-methylbenzylamine (both diastereomers) have been determined at low temperature. Decomplexation of the amine ligand from purified diastereomeric salts to affect resolution of the metal centred chirality has been attempted. The chiral isonitrile ligand containing compounds [(η5-C5H5)Ru(PPh3)(CNCH(Me)Ph)(Cl)] and [(η5-C5H5)Ru(PPh3)(CNCH(Me)Ph)(NH3)]PF6 have been prepared from (S)-α-methylbenzylisonitrile and the single crystal X-ray structure of both diastereomeric salts of the ammine compound has been determined.
Address (URL): http://dx.doi.org/10.1016/j.poly.2006.01.016