Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III)

Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(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.

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Main Authors: Ferenc,W., Bernat,M., Sarzyński,J., Głuchowska,H.
Format: Digital revista
Language:English
Published: Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP 2010
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702010000100008
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spelling oai:scielo:S0100-467020100001000082010-06-09Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III)Ferenc,W.Bernat,M.Sarzyński,J.Głuchowska,H. 4-chlorophenoxyacetates thermal stability magnetic 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.info:eu-repo/semantics/openAccessFundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESPEclética Química v.35 n.1 20102010-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702010000100008en10.1590/S0100-46702010000100008
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country Brasil
countrycode BR
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access En linea
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libraryname SciELO
language English
format Digital
author Ferenc,W.
Bernat,M.
Sarzyński,J.
Głuchowska,H.
spellingShingle Ferenc,W.
Bernat,M.
Sarzyński,J.
Głuchowska,H.
Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(III)
author_facet Ferenc,W.
Bernat,M.
Sarzyński,J.
Głuchowska,H.
author_sort Ferenc,W.
title Complexes of 4-chlorophenoxyacetates of Nd(III), Gd(III) and Ho(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)
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.
publisher Fundação Editora da Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP
publishDate 2010
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-46702010000100008
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AT sarzynskij complexesof4chlorophenoxyacetatesofndiiigdiiiandhoiii
AT głuchowskah complexesof4chlorophenoxyacetatesofndiiigdiiiandhoiii
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