Isotopic studies of the metal-ligand vibrations in histamine complexes with copper(II).
Two known copper complexes of the formulae Cu(hm)2(ClO4)2, Cu(hm)Cl2 and new, Cu(hm)Br2 (hm = histamine) have been investigated in the 600-50 cm(-1) far-infrared region. Assignments of vibrations related to metal-ligand bonds have been made based on metal isotope substitution, partial deuteration and halogen sensitivity. Copper-hm stretching vibrations have been localised at 420, 417 and 411 cm(-1) for modes involving amine nitrogen and at 282, 270, 259 cm(-1) for those of imidazole nitrogen. Vibrational coupling between some metal-ligand modes has been postulated.
Drozdzewski
P
P
Institute of Inorganic Chemistry and Metallurgy of Rare Elements, Wrocław University of Technology, Poland. drozdzewski@ichn.ch.pwr.wroc.pl
Kordon
E
E
D003300:Copper / Q000737:chemistry*; D006632:Histamine / Q000737:chemistry*; D007554:Isotopes; D019265:Spectroscopy, Near-Infrared
D007554:Isotopes; D003300:Copper; D006632:Histamine