Journal
POLYHEDRON
Volume 52, Issue -, Pages 1059-1064Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.poly.2012.06.074
Keywords
Copper; Crystal structure; Hydrogen bonds; Pyrimidines
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Funding
- Leiden University Study group WFMO (Werkgroep Fundamenteel MaterialenOnderzoek)
- Distinguished Scientist Fellowship Program (DSFP) at King Saud University
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Three new Cu(II) compounds of pyridine-2,6-dicarboxylic acid (H(2)pdc) with substituted pyrimidines as additional ligands have been synthesized and structurally characterized using X-ray diffraction, i.e. [Cu(pdc)(4HOpym)(H2O)(2)](H2O)(2) (1) (4HOpym = 4-hydroxypyrimidine), [Cu(Pdc)(anpym)(H2O)] (2) (anpym = 2-amino-5-nitropyrimidine) and [Cu(pdc)(cinpym)(H2O)](H2O) (3) (clnpym = 2-chloro-4-nitropyrimidine). The three compounds are further characterized by IR, EPR and ligand field spectroscopy. The geometry around the Cu(II) ions is distorted octahedral for (1) and distorted square pyramidal for (2) and (3). Inter- and intramolecular hydrogen bondings play an important role in the structure and packing of the compounds. (C) 2012 Elsevier Ltd. All rights reserved.
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