A self assembled 3-D network propagated by coordination polymerization and H-bonding: Synthesis and X-ray crystal structure of [{Co(L)2(H2O)2}(ClO4)2(CH3COCH3) 2(H2O)2] n , where L = N,N- diisopropylisonicotinamide

Abstract

Reaction of Co(ClO4)2..6H2O with N,N-diisopropylisonicotinamide (L) has yielded a 1-D coordination polymer [{Co(L)2(H2O)2}(ClO4)2(CH3COCH3) 2(H2O)2]n(1). Complex 1 has been characterized by infrared (IR) and UV-Vis spectroscopies, thermal analysis, and single crystal X-ray diffraction techniques. The structure has alternate arrangement of parallel 1-D cationic metal-ligand chains and H-bonded anionic chains containing perchlorate, acetone and water in the lattice. Further hydrogen bonding among both chains leads to formation of 2-D networks along almost perpendicular planes. Interpenetrations of such perpendicular 2-D sheets create a 3-D supramolecular structure.