title: Electronic, epr and magnetic studies of Co(II), Ni(II) and Cu(II) complexes with thiosemicarbazone (L1) and semicarbazone (L2) derived from pyrole-2-carboxyaldehyde.
abstract: Co(II), Ni(II) and Cu(II) complexes are synthesized with thiosemicarbazone (L(1)) and semicarbazone (L(2)) derived from pyrole-2-carboxyaldehyde. These complexes are characterized by elemental analysis, molar conductance, magnetic susceptibility measurements, mass, IR, electronic and EPR spectral studies . The molar conductance measurements of the complexes in DMSO correspond to non-electrolytic nature except Co(L1)2(NO3)2 and Ni(L1)2(NO3)2 complexes which are 1:2 electrolytes. All the complexes are of high-spin type. On the basis of spectral studies an octahedral geometry may be assigned for Co(II) and Ni(II) complexes except Co(L1)2(NO3)2 and Ni(L1)2(NO3)2 which are of tetrahedral geometry. A tetragonal geometry may be suggested for Cu(II) complexes.
authors.affiliation: Department of Chemistry, Zakir Husain College, J.L.N. Marg, New Delhi 110002, India. schandra_00@yahoo.com
authors.forename: Sulekh
authors.initials: S
authors.lastname: Chandra
authors.forename: Anil
authors.initials: A
authors.lastname: Kumar
mesh_terms: D000447:Aldehydes / Q000737:chemistry; D003035:Cobalt / Q000737:chemistry; D003300:Copper / Q000737:chemistry; D004121:Dimethyl Sulfoxide / Q000737:chemistry; D004578:Electron Spin Resonance Spectroscopy; D004581:Electronics; D008024:Ligands; D008280:Magnetics; D019216:Metals, Heavy / Q000737:chemistry*; D009532:Nickel / Q000737:chemistry; D012997:Solvents / Q000737:chemistry; D013055:Spectrophotometry, Infrared; D013882:Thiosemicarbazones / Q000737:chemistry*
chemical_list: D000447:Aldehydes; D008024:Ligands; D019216:Metals, Heavy; D012997:Solvents; D013882:Thiosemicarbazones; D003035:Cobalt; D003300:Copper; D009532:Nickel; D004121:Dimethyl Sulfoxide