Journal of Inorganic Biochemistry, volume 89, issue 1-2, pages 18-28

Synthesis, crystal structure, EPR properties, and anti-convulsant activities of binuclear and mononuclear 1,10-phenanthroline and salicylate ternary copper(II) complexes

Pascale LEMOINE 1
Bernard VIOSSAT 2
Georges Morgant 3
FREDERICK T. GREENAWAY 4
Alain Tomas 1
NGUYEN HUY DUNG 3
John R.J. Sorenson 5
2
 
Laboratoire de Chimie Générale, Faculté de Médecine et de Pharmacie, Poitiers, France
3
 
Laboratoire de Cristallochimie Bioinorganique, Faculté de Pharmacie, Paris XI, France
4
 
Department of Chemistry Clark University, Worcester, MA 01610, USA
5
 
Division of Medicinal Chemistry, Department of Pharmaceutical Sciences, University of Arkansas, Medical Sciences Campus, 4301 W. Markham Street, Little Rock, AR 72205, USA
Publication typeJournal Article
Publication date2002-04-01
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor3.9
ISSN01620134, 18733344
Biochemistry
Inorganic Chemistry
Abstract
Two ternary Cu(II) complexes of 1,10-phenanthroline (phen) and singly (Hsal(-)) or dideprotonated (sal(2-)) salicylate ligands were synthesized, their X-ray crystal structure and electron paramagnetic resonance spectral characteristics determined, and evaluated for anti-convulsant activities in the maximal electroshock (MES) and Metrazol models of seizure and Rotorod toxicity. The X-ray crystal structure of [bis(1,10-phenanthroline)-mu-bis(salicylato-O,O')dicopper(II)] dihydrate, 1, ([Cu(II)(2)(phen)(2)(sal)(2)].2[H(2)O]), shows it to be binuclear. This dimer consists of two centrosymmetrically related pseudo-five coordinate Cu(II) atoms 3.242(2) A apart and bridged by two dideprotonated salicylate ligands. The X-ray crystal structure of [bis(1,10-phenanthroline)(salicylato)copper(II)][salicylate] monohydrate, 2, ([Cu(II)(phen)(2)(Hsal)](+)[Hsal](-)[H(2)O]), shows it to be mononuclear. This complex cation exhibits a highly irregular distorted square pyramidal geometry about the Cu(II) atom, (4+1+1*). Each salicylate is singly deprotonated and one of them is ligand bonded in an asymmetric chelating mode. EPR results for 2 indicate that in concentrated DMF solution phen remains bonded to copper but salicylate is likely monodentate in contrast to the situation for 1. However, in dilute DMF solution, both 1 and 2 form the same species, which accounts for the similarity in anti-convulsant activity of the two compounds. Both 1 and 2 were found to be effective in preventing MES-induced seizures and ineffective in preventing Metrazol-induced seizures. Rotorod toxicity, consistent with central nervous system depression, paralleled the observed anti-convulsant activity. It is suggested that the observed anti-convulsant activity is consistent with central nervous system depression as a physiological mechanism in overcoming MES-induced seizures due to MES-induced brain inflammatory disease.

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LEMOINE P. et al. Synthesis, crystal structure, EPR properties, and anti-convulsant activities of binuclear and mononuclear 1,10-phenanthroline and salicylate ternary copper(II) complexes // Journal of Inorganic Biochemistry. 2002. Vol. 89. No. 1-2. pp. 18-28.
GOST all authors (up to 50) Copy
LEMOINE P., VIOSSAT B., Morgant G., GREENAWAY F. T., Tomas A., DUNG N. H., Sorenson J. R. Synthesis, crystal structure, EPR properties, and anti-convulsant activities of binuclear and mononuclear 1,10-phenanthroline and salicylate ternary copper(II) complexes // Journal of Inorganic Biochemistry. 2002. Vol. 89. No. 1-2. pp. 18-28.
RIS |
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RIS Copy
TY - JOUR
DO - 10.1016/S0162-0134(01)00324-5
UR - https://doi.org/10.1016/S0162-0134(01)00324-5
TI - Synthesis, crystal structure, EPR properties, and anti-convulsant activities of binuclear and mononuclear 1,10-phenanthroline and salicylate ternary copper(II) complexes
T2 - Journal of Inorganic Biochemistry
AU - LEMOINE, Pascale
AU - VIOSSAT, Bernard
AU - Morgant, Georges
AU - Tomas, Alain
AU - DUNG, NGUYEN HUY
AU - Sorenson, John R.J.
AU - GREENAWAY, FREDERICK T.
PY - 2002
DA - 2002/04/01 00:00:00
PB - Elsevier
SP - 18-28
IS - 1-2
VL - 89
SN - 0162-0134
SN - 1873-3344
ER -
BibTex |
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BibTex Copy
@article{2002_LEMOINE,
author = {Pascale LEMOINE and Bernard VIOSSAT and Georges Morgant and Alain Tomas and NGUYEN HUY DUNG and John R.J. Sorenson and FREDERICK T. GREENAWAY},
title = {Synthesis, crystal structure, EPR properties, and anti-convulsant activities of binuclear and mononuclear 1,10-phenanthroline and salicylate ternary copper(II) complexes},
journal = {Journal of Inorganic Biochemistry},
year = {2002},
volume = {89},
publisher = {Elsevier},
month = {apr},
url = {https://doi.org/10.1016/S0162-0134(01)00324-5},
number = {1-2},
pages = {18--28},
doi = {10.1016/S0162-0134(01)00324-5}
}
MLA
Cite this
MLA Copy
LEMOINE, Pascale, et al. “Synthesis, crystal structure, EPR properties, and anti-convulsant activities of binuclear and mononuclear 1,10-phenanthroline and salicylate ternary copper(II) complexes.” Journal of Inorganic Biochemistry, vol. 89, no. 1-2, Apr. 2002, pp. 18-28. https://doi.org/10.1016/S0162-0134(01)00324-5.
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