Journal
POLYHEDRON
Volume 22, Issue 3, Pages 403-409Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0277-5387(02)01364-5
Keywords
copper(II)-Schiff base complexes; N-salicylidene derivative; X-ray structures; ternary copper(II) complexes; toxicity of copper(II) complexes; Drosophila melanogaster
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The ternary [Cu(Sal-(L-Ser))(2,6-diaminopyridine)H2O] (1b) complex has been prepared and the crystal structure determined. The copper(II) cation has a square pyramidal geometry, being coordinated to the tridentate Sal-(L-Ser) Schiff base ligand and the heterocyclic nitrogen atom N(I 1) of the 2,6-diaminopyridine molecule which occupying the corners of the square base. The coordination sphere about the copper is completed by an axial O(W) atom of a water molecule. Spectroscopic data are discussed. Preliminary toxicity studies [larva-to-adult viability (V) and developmental time (in days) (DT)] of several copper(II) compounds including complex I and other related previously described complexes [Cu(Sal-(L-Ser))H2O].H2O (2) and [Cu(Sal-Ser)(2-aminopyridine)] (3) against Drosophila melanogaster (Or-R) show that these copper(II) complexes display less toxicity than simple copper(II) salts. (C) 2002 Elsevier Science Ltd. All rights reserved.
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