X-ray structural investigations of bromo-oxoditerpenoids and the nickel (II) chelate of a pyridoxal-amino acid intermediate

by Cutfield, John Franklin

The crystal structure of bis-(pyridoxylidene-L-valine)nickel(II) hydrate (referred to as nickel(II) pyridoxylidene L-valine) has been determined but the difficulty in detecting small deviations from body-centred symmetry, and in locating all solvent molecules, has precluded an accurate analysis. Octahedral coordination to the nickel atom is achieved by the attachment of two Schiff base units. The fused ring system of each unit reveals distortions from planarity.