2,4′-Bipyridyl complexes with cobalt(II) and nickel(II)

Complexes of empirical formulae [ML2Cl2(OH2)2], [CoL2Br2(OH2)2]L·4H2O, [NiL2Br2(OH2)2]L2·2H2O, [ML2(OH2)4]L2(NO3)2 and [ML4(OH2)2](ClO4)2·2H2O (M = CoII, NiII, L = 2,4′-bipyridyl) were synthesized and characterized by elemental and spectral analyses. The thermal decomposition of the complexes was also investigated.