Dawn Wong - Preparation of the chiral amine salts [(η5-C5H5)Ru(PPh3)(CNtBu)(NH2R)]PF6. X-ray single crystal structures of the diastereomeric salts (SRuRC)- and (RRuRC)-[(η5-C5H5)Ru(PPh3)(CNtBu){NH2CH(Me)(Ph)}]PF6.

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      Publication Details (including relevant citation   information):

      Wong, D. M.; Simpson, S. J. Polyhedron  2006, 25, 2303-2317.

      http://dx.doi.org/10.1016/j.poly.2006.01.016

     

     

      Abstract:

      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