S. Cakir et al., Synthesis and spectroscopic studies of the nicotinamide adducts of cobalt(II), nickel(II) and zinc(II) chlorides, POL J CHEM, 75(3), 2001, pp. 371-377
Nicotinamide (na) adducts of Co(II), Ni(II) and Zn(II) chlorides are synthe
sized and characterized by thermoanalytical methods (TG, DTG, DTA), FT IR (
4000-400 cm(-1)) and UV/Vis spectroscopy. Structural similarity is inferred
between the octahedral Co and Ni compounds of type [M(na)(2)(H2O)(4)]Cl-2.
The tetrahedral Zn complex [Zn(na)(2)Cl-2] presents a different structure.
The coordination of the metal ions in the Co and Ni adducts modelled by se
miempirical theoretical methods compares well with the structural data for
[Ni(na)(2)(H2O)(4)](NO3)(2). 2H(2)O.