1D helical cadmium coordination polymers containing hydrazide ligand: The role of solvent and molar ratio

Three new cadmium coordination polymers, [Cd(L)(NO3)2CH3OH]n, 1, {[Cd(L)2(NO3)]NO3}n, 2 and {[Cd(L)2(NO3)]NO3.H2O}n3, which L is nicotinohydrazide have been synthesized and characterized by spectroscopic methods as well as single crystal X-ray diffraction. The solvent effect and metal-to-ligand ratio have been used for synthesis of compound 1-3. X-ray crystallography showed that semi-flexible nature of L ligand causes to syn-syn conformation which leading to formation of different 1D helical chain coordination polymers.183