title: Synthesis and characterization of iron(III), manganese(II), cobalt(II), nickel(II), copper(II) and zinc(II) complexes of salicylidene-N-anilinoacetohydrazone (H2L1) and 2-hydroxy-1-naphthylidene-N-anilinoacetohydrazone (H2L2).
abstract: Salicylidene-N-anilinoacetohydrazone (H(2)L(1)) and 2-hydroxy-1-naphthylidene-N-anilinoacetohydrazone (H(2)L(2)) and their iron(III), manganese(II), cobalt(II), nickel(II), copper(II) and zinc(II) complexes have been synthesized and characterized by IR, electronic spectra, molar conductivities, magnetic susceptibilities and ESR. Mononuclear complexes are formed with molar ratios of 1:1, 1:2 and 1:3 (M:L). The IR studies reveal various modes of chelation. The electronic absorption spectra and magnetic susceptibility measurements show that the iron(III), nickel(II) and cobalt(II) complexes of H(2)L(1) have octahedral geometry. While the cobalt(II) complexes of H(2)L(2) were separated as tetrahedral structure. The copper(II) complexes have square planar stereochemistry. The ESR parameters of the copper(II) complexes at room temperature were calculated. The g values for copper(II) complexes proved that the Cu-O and Cu-N bonds are of high covalency.
authors.affiliation: Department of Chemistry, Faculty of Science, El-Menoufia University, Shebin El-Kom, Egypt. dr.saeyda_elenein@yahoo.com
authors.forename: S A
authors.initials: SA
authors.lastname: AbouEl-Enein
authors.forename: F A
authors.initials: FA
authors.lastname: El-Saied
authors.forename: T I
authors.initials: TI
authors.lastname: Kasher
authors.forename: A H
authors.initials: AH
authors.lastname: El-Wardany
mesh_terms: D003035:Cobalt / Q000737:chemistry / Q000378:metabolism; D003300:Copper / Q000737:chemistry / Q000378:metabolism; D004553:Electric Conductivity; D004578:Electron Spin Resonance Spectroscopy; D006835:Hydrazones / Q000737:chemistry* / Q000378:metabolism; D007501:Iron / Q000737:chemistry / Q000378:metabolism; D009682:Magnetic Resonance Spectroscopy; D008280:Magnetics; D008345:Manganese / Q000737:chemistry / Q000378:metabolism; D019216:Metals, Heavy / Q000737:chemistry* / Q000378:metabolism; D015394:Molecular Structure; D009532:Nickel / Q000737:chemistry / Q000378:metabolism; D012545:Schiff Bases / Q000737:chemistry; D013055:Spectrophotometry, Infrared; D013696:Temperature; D015032:Zinc / Q000737:chemistry / Q000378:metabolism
chemical_list: D006835:Hydrazones; D019216:Metals, Heavy; D012545:Schiff Bases; D003035:Cobalt; D008345:Manganese; D003300:Copper; D009532:Nickel; D007501:Iron; D015032:Zinc