Synthesis and spectroscopic characterization of copper(II) tetraazaiminooxime macrocyclic complexes--a tetragonal distortion analysis.
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.
Protasiewyck
Gisele Marina
GM
Departamento de Química, Universidade Federal do Paraná, Centro Politécnico, C.P. 19081, 81531-990 Curitiba, PR, Brazil.
Nunes
Fábio Souza
FS
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
D007097:Imines; D009942:Organometallic Compounds; D010091:Oximes; D003300:Copper