Synthesis and crystal structure of the [Co2(Nicotinamide)4(C4H9COO)4(H2O)] complex

Coordination compounds of cobalt(II), nickel(II), and zinc(II) valerates and benzoates with isonicotinic acid hydrazide

“…We have earlier investigated the products of the reaction of biometals valerates and benzoates with semicarbazide [5] and nicotinamide [6][7][8][9][10][11]. In the present work we report on synthesis of the complexes of cobalt(II), nickel(II), and zinc(II) valerates and benzoates with isonicotinic hydrazide, I-VI (Scheme 1).…”

“…Heterocyclic nitrogen atom did not participate in the binding with metals, as confirmed by the unchanged location of the pyridine ring bands (around 1600 cm -1 ). Earlier examples of certain 3d-metals valerates and benzoates have revealed that participation of heterocyclic nitrogen atom in the coordination with metals should have increased the latter mentioned bands frequency [6][7][8][9]11]. The breathing bands of the heterocycle at 1000 cm -1 were practically not changed as well.…”

Structural and magnetic properties of cobalt(II) complexes with pyridinecarboxamide ligands

“…These anions are hydrogen bonded to the complex. Furthermore, one dinuclear complex can also be found in the literature [19], where each Co(II) is coordinated by two nicotinamide molecules, one monodentate valerate and two bridging valerate ligands and a bridging water molecule. There are also two polymorphic modifications of the polynuclear compound with Co(II) central ions and nicotinamide, water and succinate ligands [20,21].…”