Spectroscopic, thermal and X-ray crystal structure studies of some bis-(pyrazine-2-carboxylato) nickel(II) complexes

Three nickel(II) complexes [Ni(PC)2(H2O)2], 1, [Ni(PC)2(TU)2], 2 and [Ni(PC)2(ABI)2]· 2(H2O), 3, PC = pyrazine-2-carboxylate, TU = thiourea and ABI = 2-amino...