Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III)
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Eclética Química |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702010000100008 |
Resumo: | The complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) have been synthesized as polycrystalline hydrated solids, and characterized by elemental analysis, spectroscopy, magnetic studies and also by X-ray diffraction and thermogravimetric measurements. The analysed complexes have the following colours: violet for Nd(III), white for Gd(III) and cream for Ho(III) compounds. The carboxylate groups bind as bidentate chelating (Ho) or bridging ligands (Nd, Gd). On heating to 1173K in air the complexes decompose in several steps. At first, they dehydrate in one step to form anhydrous salts, that next decompose to the oxides of respective metals. The gaseous products of their thermal decomposition in nitrogen were also determined and the magnetic susceptibilites were measured over the temperature range of 76-303K and the magnetic moments were calculated. The results show that 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) are high-spin complexes with weak ligand fields. The solubility value in water at 293K for analysed 4-chlorophenoxyacetates is in the order of 10-4mol/dm³. |
id |
UNESP-29_feec686b8951758c07606d3965a028d5 |
---|---|
oai_identifier_str |
oai:scielo:S0100-46702010000100008 |
network_acronym_str |
UNESP-29 |
network_name_str |
Eclética Química |
repository_id_str |
|
spelling |
Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III)4-chlorophenoxyacetatesthermal stabilitymagnetic properties of Nd(III)Ho(III)Gd(III)The complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) have been synthesized as polycrystalline hydrated solids, and characterized by elemental analysis, spectroscopy, magnetic studies and also by X-ray diffraction and thermogravimetric measurements. The analysed complexes have the following colours: violet for Nd(III), white for Gd(III) and cream for Ho(III) compounds. The carboxylate groups bind as bidentate chelating (Ho) or bridging ligands (Nd, Gd). On heating to 1173K in air the complexes decompose in several steps. At first, they dehydrate in one step to form anhydrous salts, that next decompose to the oxides of respective metals. The gaseous products of their thermal decomposition in nitrogen were also determined and the magnetic susceptibilites were measured over the temperature range of 76-303K and the magnetic moments were calculated. The results show that 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) are high-spin complexes with weak ligand fields. The solubility value in water at 293K for analysed 4-chlorophenoxyacetates is in the order of 10-4mol/dm³.Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702010000100008Eclética Química v.35 n.1 2010reponame:Eclética Químicainstname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)instacron:UNESP10.1590/S0100-46702010000100008info:eu-repo/semantics/openAccessFerenc,W.Bernat,M.Sarzyński,J.Głuchowska,H.eng2010-06-09T00:00:00Zoai:scielo:S0100-46702010000100008Revistahttp://revista.iq.unesp.br/ojs/index.php/ecletica/PUBhttps://revista.iq.unesp.br/ojs/index.php/ecletica/oaiecletica@ctrlk.com.br||ecletica@iq.unesp.br1678-46181678-4618opendoar:2010-06-09T00:00Eclética Química - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP)false |
dc.title.none.fl_str_mv |
Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) |
title |
Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) |
spellingShingle |
Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) Ferenc,W. 4-chlorophenoxyacetates thermal stability magnetic properties of Nd(III) Ho(III) Gd(III) |
title_short |
Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) |
title_full |
Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) |
title_fullStr |
Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) |
title_full_unstemmed |
Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) |
title_sort |
Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) |
author |
Ferenc,W. |
author_facet |
Ferenc,W. Bernat,M. Sarzyński,J. Głuchowska,H. |
author_role |
author |
author2 |
Bernat,M. Sarzyński,J. Głuchowska,H. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Ferenc,W. Bernat,M. Sarzyński,J. Głuchowska,H. |
dc.subject.por.fl_str_mv |
4-chlorophenoxyacetates thermal stability magnetic properties of Nd(III) Ho(III) Gd(III) |
topic |
4-chlorophenoxyacetates thermal stability magnetic properties of Nd(III) Ho(III) Gd(III) |
description |
The complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) have been synthesized as polycrystalline hydrated solids, and characterized by elemental analysis, spectroscopy, magnetic studies and also by X-ray diffraction and thermogravimetric measurements. The analysed complexes have the following colours: violet for Nd(III), white for Gd(III) and cream for Ho(III) compounds. The carboxylate groups bind as bidentate chelating (Ho) or bridging ligands (Nd, Gd). On heating to 1173K in air the complexes decompose in several steps. At first, they dehydrate in one step to form anhydrous salts, that next decompose to the oxides of respective metals. The gaseous products of their thermal decomposition in nitrogen were also determined and the magnetic susceptibilites were measured over the temperature range of 76-303K and the magnetic moments were calculated. The results show that 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III) are high-spin complexes with weak ligand fields. The solubility value in water at 293K for analysed 4-chlorophenoxyacetates is in the order of 10-4mol/dm³. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702010000100008 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702010000100008 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-46702010000100008 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP |
publisher.none.fl_str_mv |
Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP |
dc.source.none.fl_str_mv |
Eclética Química v.35 n.1 2010 reponame:Eclética Química instname:Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Eclética Química |
collection |
Eclética Química |
repository.name.fl_str_mv |
Eclética Química - Universidade Estadual Paulista Júlio de Mesquita Filho (UNESP) |
repository.mail.fl_str_mv |
ecletica@ctrlk.com.br||ecletica@iq.unesp.br |
_version_ |
1754734618573012992 |