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Journal of Chemistry
Volume 2013, Article ID 370637, 9 pages
Research Article

XPS-Characterization of Heterometallic Coordination Compounds with Optically Active Ligands

1Departamento de Química Inorgánica, Facultad de Química, Universidad Nacional Autónoma de México, C. U., Coyoacán, 04510 Mexico, DF, Mexico
2Instituto de Investigaciones en Materiales, Universidad Nacional Autónoma de México, C. U., Coyoacán, 04510 Mexico, DF, Mexico

Received 14 March 2013; Revised 9 May 2013; Accepted 23 May 2013

Academic Editor: Tsun-Ren Chen

Copyright © 2013 Yenny Ávila-Torres et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The heterometallic optical complexes [Cu2Co(S,S(+)cpse)3(H2O)3]·4H2O (1) and [Cu2Ni(S,S(+)cpse)3(H2O)3]·10H2O (2) were obtained from the mononuclear copper(II) compound by the addition of nickel(II) or cobalt(II) chlorides, where (H2cpse) is the acetyl amino alcohol derivative N-[2-hydroxy-1(R)-methyl-2(R)-phenylethyl]-N-methylglycine. In comparison with the homotrinuclear copper(II) compound [Cu3(S,S(+)cpse)3(H2O)3]·8H2O reported previously, the substitution of a copper(II) atom by one cobalt(II) ion gave place to a heterotrinuclear compound 1, which presents ferromagnetic-antiferromagnetic behaviour. When substituting a copper(II) by a nickel(II) ion, the trinuclear compound 2 showed an antiferromagnetic coupling. The magnetic behaviour of the heterotrinuclear compounds is driven by the nature of the metal ion which was introduced in the copper(II) triangular array. The ligand and its coordination compounds were characterized by IR, UV-Vis-NIR. Their chemical was confirmed by photoelectron spectroscopy (XPS).