title: Synthesis and characterization of perchlorato bridged Cu2(II)Zn(II) heterotrinuclear complexes derived from succinoyldihydrazones.
abstract: In the present paper three new heterotrimetallic Cu(II)-Zn(II)-Cu(II) complexes have been synthesized and characterized by analytical and spectroscopic studies. The molar conductance values for the complexes fall in the region 1.2-1.7Ω(-1)cm(2)mol(-1) in DMSO solution indicating that all of the complexes are non-electrolyte. The dihydrazone ligand is present in enol form in all of the complexes. Both the copper centres have distorted square pyramidal stereochemistry in all of the complexes while the zinc centre in all hetero metal complexes has octahedral stereochemistry. The EPR parameters of the complexes indicate that the copper centre has [Formula: see text] orbital as the ground state. The electron transfer reactions of the complexes have been investigated by cyclic voltammetry.
authors.affiliation: Department of Chemistry, Centre for Advanced Studies in Chemistry, North Eastern Hill University, Shillong 793022, Meghalaya, India.
authors.forename: Rosmita
authors.initials: R
authors.lastname: Borthakur
authors.affiliation: Department of Chemistry, Faculty of Science and Agriculture, The University of West-Indies, St Augustine, Trinidad and Tobago.
authors.forename: Arvind
authors.initials: A
authors.lastname: Kumar
authors.affiliation: Department of Chemistry, Centre for Advanced Studies in Chemistry, North Eastern Hill University, Shillong 793022, Meghalaya, India.
authors.forename: Sankey
authors.initials: S
authors.lastname: Shangpung
authors.affiliation: Department of Chemistry, Centre for Advanced Studies in Chemistry, North Eastern Hill University, Shillong 793022, Meghalaya, India. Electronic address: ralal@rediffmail.com.
authors.forename: Ram A
authors.initials: RA
authors.lastname: Lal
mesh_terms: D002244:Carbon / Q000737:chemistry*; D002713:Chlorine / Q000737:chemistry*; D056831:Coordination Complexes / Q000737:chemistry; D003300:Copper / Q000737:chemistry*; D004573:Electrolytes; D004578:Electron Spin Resonance Spectroscopy; D004579:Electron Transport; D004583:Electrons; D006835:Hydrazones / Q000737:chemistry*; D008024:Ligands; D008280:Magnetics; D008970:Molecular Weight; D010100:Oxygen / Q000737:chemistry; D013055:Spectrophotometry, Infrared; D013237:Stereoisomerism; D019802:Succinic Acid / Q000737:chemistry*; D015032:Zinc / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D004573:Electrolytes; D006835:Hydrazones; D008024:Ligands; D002713:Chlorine; D002244:Carbon; D003300:Copper; D019802:Succinic Acid; D015032:Zinc; D010100:Oxygen
keywords: Copper(II) complexes; Heterotrimetallic complexes; Perchlorato bridged and spectroscopic studies; Succinoyldihydrazones; Zinc(II)