title: Synthesis and spectroscopic characterization of copper(II) tetraazaiminooxime macrocyclic complexes--a tetragonal distortion analysis.
abstract: Herein we describe the synthesis and spectroscopic (infrared and UV-vis) analysis of [Cu(II)(dohpn)(L)](n+) (dohpn=imineoximic tetraazamacrocyclic ligand 2,3,9,10-tetramethyl-1,4,8,11-tetraazaundecane-1,3,8,10-tetraen-11-ol-1-olate) and L=SCN(-), I(-), Cl(-) (n=0) and 4-aminopyridine (ampy), 4,4'-bipyridine (bipy), imidazole (im), 2-aminopyrazine (ampz) and water (n=1+). The following order of the Jahn-Teller stabilization energy (cm(-1)) was observed: I(-)(6452)<Cl(-)(6477)<NCS(-)(6494)<ampy(6562)<im(6614)<bipy(6685)<ampz(6739)<H(2)O(7813) and the energy of the crystal field transition was correlated with the tetragonal distortion in the structures.
authors.affiliation: Departamento de Química, Universidade Federal do Paraná, Centro Politécnico, C.P. 19081, 81531-990 Curitiba, PR, Brazil.
authors.forename: Gisele Marina
authors.initials: GM
authors.lastname: Protasiewyck
authors.forename: Fábio Souza
authors.initials: FS
authors.lastname: Nunes
mesh_terms: D003300:Copper / Q000737:chemistry*; D007097:Imines / Q000138:chemical synthesis / Q000737:chemistry*; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry*; D010091:Oximes / Q000138:chemical synthesis / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
chemical_list: D007097:Imines; D009942:Organometallic Compounds; D010091:Oximes; D003300:Copper