MAGNETIC PROPERTIES AND ANTIBACTERIAL ACTIVITY OF TETRANUCLEAR COPPER COMPLEXES BRIDGED BY OXO GROUP

A series of three tetranuclear Cu(II) complexes of general formula [Cu4OCl6L4], where L is a Lewis Base ligand has been characterized through magnetic measurements and determination of antimicrobial activities. This study include the following species [Cu4OCl6)Cl(PhIm)3](HPhIm)•H2O (1) whe...

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Autores principales:	CORTES,P., ATRIA,A.M., CONTRERAS,M., GARLAND,M.T., PEÑA,O., CORSINI,G.
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2006
Materias:	Copper magnetism antibacterial activities
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072006000300005
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spelling	oai:scielo:S0717-970720060003000052006-11-16MAGNETIC PROPERTIES AND ANTIBACTERIAL ACTIVITY OF TETRANUCLEAR COPPER COMPLEXES BRIDGED BY OXO GROUPCORTES,P.ATRIA,A.M.CONTRERAS,M.GARLAND,M.T.PEÑA,O.CORSINI,G. Copper magnetism antibacterial activities A series of three tetranuclear Cu(II) complexes of general formula [Cu4OCl6L4], where L is a Lewis Base ligand has been characterized through magnetic measurements and determination of antimicrobial activities. This study include the following species [Cu4OCl6)Cl(PhIm)3](HPhIm)•H2O (1) where PhIm= 4-phenylimidazole, [(Cu4OCl6)(PyNO)4]•1/5(H2O) (2) where PyNO= Pyridine-N-oxide and [(Cu4OCl6)(MeIm)4]•3(CH3OH) (3) where MeIm = 2-methylimidazole. The polynuclear cluster in the complexes contains a central oxygen atom tetrahedral coordinated to four copper(II) ions, each of which coordinates a monodentate L ligand. Each pair of copper atoms is bridged by on a chlorine ion, resulting a trigonal bipiramidal environment. The variable temperature magnetic susceptibilities of these complexes were investigated in the temperature range 5-300K. Satisfactory fits to the observed susceptibility data were obtained only for the complexes (1) and (3), by assuming isotropic magnetic exchange interactions and using the appropriate spin Hamiltonian and susceptibility equation giving the coupling constants J1= 0.148cm-1, J2= -1.707 cm-1 for (1) and J1= 0.522 cm-1, J2= -5.32 cm-1 for (3). The antimicrobial activities of these complexes have been screened in vitro against Gram positive and negative bacteriainfo:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.51 n.3 20062006-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072006000300005en10.4067/S0717-97072006000300005
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Copper magnetism antibacterial activities
spellingShingle	Copper magnetism antibacterial activities CORTES,P. ATRIA,A.M. CONTRERAS,M. GARLAND,M.T. PEÑA,O. CORSINI,G. MAGNETIC PROPERTIES AND ANTIBACTERIAL ACTIVITY OF TETRANUCLEAR COPPER COMPLEXES BRIDGED BY OXO GROUP
description	A series of three tetranuclear Cu(II) complexes of general formula [Cu4OCl6L4], where L is a Lewis Base ligand has been characterized through magnetic measurements and determination of antimicrobial activities. This study include the following species [Cu4OCl6)Cl(PhIm)3](HPhIm)•H2O (1) where PhIm= 4-phenylimidazole, [(Cu4OCl6)(PyNO)4]•1/5(H2O) (2) where PyNO= Pyridine-N-oxide and [(Cu4OCl6)(MeIm)4]•3(CH3OH) (3) where MeIm = 2-methylimidazole. The polynuclear cluster in the complexes contains a central oxygen atom tetrahedral coordinated to four copper(II) ions, each of which coordinates a monodentate L ligand. Each pair of copper atoms is bridged by on a chlorine ion, resulting a trigonal bipiramidal environment. The variable temperature magnetic susceptibilities of these complexes were investigated in the temperature range 5-300K. Satisfactory fits to the observed susceptibility data were obtained only for the complexes (1) and (3), by assuming isotropic magnetic exchange interactions and using the appropriate spin Hamiltonian and susceptibility equation giving the coupling constants J1= 0.148cm-1, J2= -1.707 cm-1 for (1) and J1= 0.522 cm-1, J2= -5.32 cm-1 for (3). The antimicrobial activities of these complexes have been screened in vitro against Gram positive and negative bacteria
author	CORTES,P. ATRIA,A.M. CONTRERAS,M. GARLAND,M.T. PEÑA,O. CORSINI,G.
author_facet	CORTES,P. ATRIA,A.M. CONTRERAS,M. GARLAND,M.T. PEÑA,O. CORSINI,G.
author_sort	CORTES,P.
title	MAGNETIC PROPERTIES AND ANTIBACTERIAL ACTIVITY OF TETRANUCLEAR COPPER COMPLEXES BRIDGED BY OXO GROUP
title_short	MAGNETIC PROPERTIES AND ANTIBACTERIAL ACTIVITY OF TETRANUCLEAR COPPER COMPLEXES BRIDGED BY OXO GROUP
title_full	MAGNETIC PROPERTIES AND ANTIBACTERIAL ACTIVITY OF TETRANUCLEAR COPPER COMPLEXES BRIDGED BY OXO GROUP
title_fullStr	MAGNETIC PROPERTIES AND ANTIBACTERIAL ACTIVITY OF TETRANUCLEAR COPPER COMPLEXES BRIDGED BY OXO GROUP
title_full_unstemmed	MAGNETIC PROPERTIES AND ANTIBACTERIAL ACTIVITY OF TETRANUCLEAR COPPER COMPLEXES BRIDGED BY OXO GROUP
title_sort	magnetic properties and antibacterial activity of tetranuclear copper complexes bridged by oxo group
publisher	Sociedad Chilena de Química
publishDate	2006
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072006000300005
work_keys_str_mv	AT cortesp magneticpropertiesandantibacterialactivityoftetranuclearcoppercomplexesbridgedbyoxogroup AT atriaam magneticpropertiesandantibacterialactivityoftetranuclearcoppercomplexesbridgedbyoxogroup AT contrerasm magneticpropertiesandantibacterialactivityoftetranuclearcoppercomplexesbridgedbyoxogroup AT garlandmt magneticpropertiesandantibacterialactivityoftetranuclearcoppercomplexesbridgedbyoxogroup AT penao magneticpropertiesandantibacterialactivityoftetranuclearcoppercomplexesbridgedbyoxogroup AT corsinig magneticpropertiesandantibacterialactivityoftetranuclearcoppercomplexesbridgedbyoxogroup
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MAGNETIC PROPERTIES AND ANTIBACTERIAL ACTIVITY OF TETRANUCLEAR COPPER COMPLEXES BRIDGED BY OXO GROUP

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