title: Synthesis, spectral and electrochemical studies of Cu(II) and Ni(II) complexes with new N2O2 ligands: a new precursor capable of depositing copper nanoparticles using thermal reduction.
abstract: Cu(II) and Ni(II) complexes of the general type [M(N2O2)] are described. The N2O2 ligands used are [N,N'-bis(2-hydroxy-6-methoxybenzylidene)propane-1,3-diamine] (HOMeSalpn) and [N,N'-bis(2-hydroxy-6-methoxybenzylidene)propane-1,2-diamine (HOMeSalpr). These complexes have been characterized by IR, UV-vis, CV, TG-DTA and 1H NMR spectroscopy. The electrochemical behavior of these complexes at a glassy carbon electrode in acetonitrile solution indicates that the first reduction process corresponding to Cu(II)-Cu(I) and Ni(II)-Ni(I) is electrochemically irreversible. The new copper complexes have been applied for the preparation of copper nanoparticles using non-ionic surfactant (Triton X-100) by thermal reduction. The copper nanoparticles with average size of 48nm were formed by thermal reduction of [N,N'-bis(2-hydroxy-6-methoxybenzylidene)propane-1,3-diamine]copper(II) in the presence of triphenylphosphine thus releasing the reduced copper and affording the high-purity copper nanoparticles.
authors.affiliation: Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Islamic Republic of Iran. mhhabibi@yahoo.com
authors.forename: Mohammad Hossein
authors.initials: MH
authors.lastname: Habibi
authors.forename: Reza
authors.initials: R
authors.lastname: Mokhtari
authors.forename: Maryam
authors.initials: M
authors.lastname: Mikhak
authors.forename: Mehdi
authors.initials: M
authors.lastname: Amirnasr
authors.forename: Ahmad
authors.initials: A
authors.lastname: Amiri
mesh_terms: D003300:Copper / Q000737:chemistry*; D018360:Crystallography, X-Ray; D055664:Electrochemical Techniques; D009682:Magnetic Resonance Spectroscopy; D053768:Metal Nanoparticles / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D009532:Nickel / Q000737:chemistry*; D009589:Nitrogen Oxides / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000378:metabolism*; D012545:Schiff Bases / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013816:Thermodynamics
chemical_list: D009589:Nitrogen Oxides; D009942:Organometallic Compounds; D012545:Schiff Bases; D003300:Copper; D009532:Nickel