Supramolecular structural diversities in the metal-organic frameworks derived from pyridylamide ligands: studying the effects of ligating topologies, hydrogen bonding backbone of the ligands and counter anions

Six metal - organic frameworks (MOFs) namely [{(CH3COO)(mu-OOCH3) Zn}(2)(mu- L1)(2)](n) 1, [{(H2O)(2)Zn}(mu-L1)(4)} BF4](n) 2, [{(Cl)(2)Zn}(mu-L1)](n) 3, [{(NO3)(2)Cd(mu- L1)(2)} center dot nitrobenzene](n) 4, [{Cl2Zn(mu-L2)}](n) 5 and [{(NO3)(2)Cd}(mu-L2)(4)](n) 6 ( where L1 = N-(3-pyridyl) nicotinamide and L2 = N-(3-pyridyl) isonicotinamide) have been synthesized and crystallographically characterized. The main aim of this work is to study the effects of ligating topologies and hydrogen bonding backbone of the ligands and counter anions on the supramolecular structural diversities in the resulting MOFs. The structures of these MOFs are discussed in this context.