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Abstract
Reaction of 4-aminobenzonitrile with different transition metal ions in the presence of chloride provides metal complexes of different dimensionalities. Whereas platinum forms a 0-D mononuclear complex {[PtCl2(4-ABN)2} 1, three new coordination polymers {[Zn(4-ABN)2(H2O)2](ClO4)2} n 2, {[Cu(4-ABN)2(MeOH)2](ClO4)2} n 3, and {Cd(4-ABN)Cl2} n 4 have been synthesized and characterized.Complexes 2 and 3 crystallize in 1-D polymeric chains, whereas 4 forms a 3-D coordination network, based on fused 12-membered rings of cadmium and chloride. A topological analysis of 4 reveals a uninodal five-connected network with the point (Schlafli) symbol of (44 × 66) and the nov (5/4/08) topology. All the isolated complexes were characterized by IR, elemental, and X-ray single crystal structural analyses. Complexes 1, 2, and 4 were additionally characterized by NMR spectroscopy.
Acknowledgments
We are grateful for the financial support received from the Council of Scientific and Industrial Research, New Delhi. One of us (M. S.) thanks CSIR for the award of JRF in a CSIR-sponsored project. We are also thankful to the National Single Crystal X-ray Diffraction Facility, Indian Institute of Technology Bombay, for the structure elucidation.
