Jump to main content
Jump to site search

Issue 9, 1991
Previous Article Next Article

Synthesis, spectral and structural studies on metal complexes of Schiff bases involving vitamin B6 and histamine

Abstract

Six metal complexes of Schiff bases involving Vitamin B6 and the decarboxylated amino acid histamine have been synthesised and characterized. Crystal structures have been determined for [CuL1(H2O)Br]-NO31(L1= pyridoxylidenehistamine) and [Cu2L22(NO3)2]·6H2O 2(L2= 5′-phosphopyridoxylidenehistaminate). The crystal structure of complex 1[space group P[1 with combining macron], a= 8.161(2), b= 10.368(2), c= 11.110(2)Å, α= 105.18(1), β= 102.12(1), γ= 72.10(1)° and Z= 2; R= 0.072, R′= 0.083] consists of square-pyramidally co-ordinated copper with the tridentate Schiff base in the zwitterionic form, whereas in 2[space group P[1 with combining macron], a= 8.727(1), b= 10.308(1), c= 12.845(2)Å, α= 110.00(1), β= 78.94(1), γ= 114.35(1)° and Z= 1; R= 0.035, R′= 0.034] the copper has the same co-ordination geometry but the tetradentate Schiff-base ligand exists as a monoanion. The conformational parameters deduced from such structures are important for understanding the stereochemical aspects of Vitamin B6-catalysed model reactions involving histidine.

Back to tab navigation

Article type: Paper
DOI: 10.1039/DT9910002289
Citation: J. Chem. Soc., Dalton Trans., 1991, 2289-2294
  •   Request permissions

    Synthesis, spectral and structural studies on metal complexes of Schiff bases involving vitamin B6 and histamine

    I. I. Mathews and H. Manohar, J. Chem. Soc., Dalton Trans., 1991, 2289
    DOI: 10.1039/DT9910002289

Search articles by author

Spotlight

Advertisements