Bf. Abrahams et al., Monoclinic and triclinic forms of bis[2-hydroxy-2,2-bis(2-pyridyl)-ethanoato-O-1,N,N ']nickel(II), ACT CRYST C, 56, 2000, pp. E126-E127
Reaction of pyridoin with nickel nitrate in methanol in air gives crystals
of two forms of the title compound, [Ni(C12H9N2O3)(2)]; a triclinic form wi
th the Ni atom on an inversion centre and a monoclinic form with one molecu
le in a general position in the asymmetric unit. Both forms show an octahed
ral nickel centre coordinated by two facial tridentate ligands with their O
-atom donors trans.