CHITOSAN METAL COMPLEXES AND CHITOSAN- Cu ESR STUDIES

Properties of the polymer metal complexes can be explained up to certain extent by the molecular structure of the complexes, but this área has not been well studied in the case of the chitosan metal complexes. In this work, we are proposing that chitosan is bonded through the 4 nitrogen to copper by...

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Autores principales:	TABOADA VALDÉS,EDELIO, CÁRDENAS TRIVIÑO,GALO
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2009
Materias:	Chitosan metal complexes esr retention sites
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000100001
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spelling	oai:scielo:S0717-970720090001000012009-05-12CHITOSAN METAL COMPLEXES AND CHITOSAN- Cu ESR STUDIESTABOADA VALDÉS,EDELIOCÁRDENAS TRIVIÑO,GALO Chitosan metal complexes esr retention sites Properties of the polymer metal complexes can be explained up to certain extent by the molecular structure of the complexes, but this área has not been well studied in the case of the chitosan metal complexes. In this work, we are proposing that chitosan is bonded through the 4 nitrogen to copper by means of square planar geometry. The polymer requires some structural modifications in order to be arranged in that geometry. Two sites in the chitin were detected, one similar to chitosan and the other in a square planar tetrahedrically distorted arrangement, with three atoms of nitrogen and one of oxygen or two atoms of nitrogen and two of oxygen. ESR studies of the copper complexes by means of chlorine and nitrate as ion counter were carried out. Nitrate exhibits one type of retention site and, on the other hand, chlorine presents two types of retention sites.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.54 n.1 20092009-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000100001en10.4067/S0717-97072009000100001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Chitosan metal complexes esr retention sites
spellingShingle	Chitosan metal complexes esr retention sites TABOADA VALDÉS,EDELIO CÁRDENAS TRIVIÑO,GALO CHITOSAN METAL COMPLEXES AND CHITOSAN- Cu ESR STUDIES
description	Properties of the polymer metal complexes can be explained up to certain extent by the molecular structure of the complexes, but this área has not been well studied in the case of the chitosan metal complexes. In this work, we are proposing that chitosan is bonded through the 4 nitrogen to copper by means of square planar geometry. The polymer requires some structural modifications in order to be arranged in that geometry. Two sites in the chitin were detected, one similar to chitosan and the other in a square planar tetrahedrically distorted arrangement, with three atoms of nitrogen and one of oxygen or two atoms of nitrogen and two of oxygen. ESR studies of the copper complexes by means of chlorine and nitrate as ion counter were carried out. Nitrate exhibits one type of retention site and, on the other hand, chlorine presents two types of retention sites.
author	TABOADA VALDÉS,EDELIO CÁRDENAS TRIVIÑO,GALO
author_facet	TABOADA VALDÉS,EDELIO CÁRDENAS TRIVIÑO,GALO
author_sort	TABOADA VALDÉS,EDELIO
title	CHITOSAN METAL COMPLEXES AND CHITOSAN- Cu ESR STUDIES
title_short	CHITOSAN METAL COMPLEXES AND CHITOSAN- Cu ESR STUDIES
title_full	CHITOSAN METAL COMPLEXES AND CHITOSAN- Cu ESR STUDIES
title_fullStr	CHITOSAN METAL COMPLEXES AND CHITOSAN- Cu ESR STUDIES
title_full_unstemmed	CHITOSAN METAL COMPLEXES AND CHITOSAN- Cu ESR STUDIES
title_sort	chitosan metal complexes and chitosan- cu esr studies
publisher	Sociedad Chilena de Química
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072009000100001
work_keys_str_mv	AT taboadavaldesedelio chitosanmetalcomplexesandchitosancuesrstudies AT cardenastrivinogalo chitosanmetalcomplexesandchitosancuesrstudies
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CHITOSAN METAL COMPLEXES AND CHITOSAN- Cu ESR STUDIES

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