title: Electronic, EPR, magnetic and mass spectral studies of mono and homo-binuclear Co(II) and Cu(II) complexes with a novel macrocyclic ligand.
abstract: A series of 20-memebered macro-cyclic metal(II) complexes have been synthesized by a macro-cyclic ligand, i.e. 1,5,11,15-tetraaza-6,10,16,20-tetraoxo-8,18-dithia-cyclocosane, it was prepared by the condensation reaction of 1,3-diaminopropane with thiodiglycolic acid. The bonding and stereochemistry of the complexes have been characterized by elemental analysis, magnetic moment, molar conductance, mass, 1H NMR, IR, electronic and EPR spectral studies. The mononuclear complexes of the type [ML]X2 have been found to have distorted octahedral geometry and the binuclear complexes [M2LX2]X2 were found to possess square planar configuration around the central metal ion.
authors.affiliation: Department of Chemistry, Zakir Husain College, University of Delhi, JLN-Marg, New Delhi 110002, India. schandra_00@yahoo.com
authors.forename: Sulekh
authors.initials: S
authors.lastname: Chandra
authors.forename: Lokesh Kumar
authors.initials: LK
authors.lastname: Gupta
mesh_terms: D000838:Anions / Q000737:chemistry; D003035:Cobalt / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D004578:Electron Spin Resonance Spectroscopy; D004583:Electrons; D008024:Ligands; D047028:Macrocyclic Compounds / Q000737:chemistry*; D046911:Macromolecular Substances; D009682:Magnetic Resonance Spectroscopy; D008280:Magnetics; D013058:Mass Spectrometry
chemical_list: D000838:Anions; D008024:Ligands; D047028:Macrocyclic Compounds; D046911:Macromolecular Substances; D003035:Cobalt; D003300:Copper