Journal
INORGANICA CHIMICA ACTA
Volume 362, Issue 8, Pages 2735-2743Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.ica.2008.12.018
Keywords
Reduced Schiff base; Tridentate ligand; Copper(II) complex; Ni(II) complex; Hydrogen-bonded supramolecular networks; Coordination polymers
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Funding
- Ministry of Education, Singapore through National University of Singapore [R143-000-252-112, R143-000-371-112]
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Complexes [Cu(HSas)(H2O)] center dot 2H(2)O (H(3)Sas = N-(2-hydroxybenzyl)-L-aspartic acid) (1), [Cu(HMeSglu) (H2O)] center dot 2H(2)O (H(3)MeSglu = (N-(2-hydroxy-5-methylbenzyl)-L-glutamic acid) (2), [Cu-2(Smet)(2)] (H(2)Smet = (N-(2-hydroxybenzyl)-L-methionine) (3), [Ni(HSas)(H2O)] (4), [Ni-2(Smet) (H2O)(2)] (5), and [Ni(HSapg)(2)] (H(2)Sapg = (N-(2-hydroxybenzyl)-L-aspargine) (6) have been synthesized and characterized by chemical and spectroscopic methods. Structural determination by single crystal X-ray diffraction studies revealed 1D coordination polymeric structures in 2 and 4, and hydrogen-bonded network structure in 5 and 6. In contrast to previously reported coordination compounds with similar ligands, the phenol remains protonated and bonded to the metal ions in 2 and 4, and also probably in 1. However, the phenolic group is non-bonded in 6. (C) 2009 Elsevier B.V. All rights reserved.
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