Synthesis, thermoanalytical and spectroscopic studies of trivalent lanthanides (Eu-Ho) complexes with the valsartan ligand
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.tca.2020.178532 http://hdl.handle.net/11449/195328 |
Resumo: | Trivalent lanthanides (Eu-Ho) complexes with Valsartan ligand were characterized by analytical, thermoanalytical and spectroscopic techniques. The comparison of the thermal decomposition of the compounds were made by plotting a 2D contour map as a facilitator for the data visualization. The thermal behavior was discussed correlating three properties of the compounds: basicity and HOMO-LUMO orbitals of the lanthanides, and the strength of each bond in the molecule. The gaseous products released during the thermal decomposition were: NH3/N2H4, CO2, CO, N2O and an aliphatic compound in air atmosphere; NH3/N2H4, CO2, CO, an unknown compound (two bands between 1200-1100 cm(-1)), and an unsaturated ketone or a mixture of unsaturated hydrocarbon and a ketone in nitrogen atmosphere. The compounds presented an amorphous halo, except holmium; the ligand binds through the tetrazole ring and the carboxylate group binds the lanthanide in monodentate mode; finally, the degree of covalence of the Eu, Dy, and Ho complexes were determined. |
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Synthesis, thermoanalytical and spectroscopic studies of trivalent lanthanides (Eu-Ho) complexes with the valsartan ligandLanthanidesValsartanThermal behaviorEvolved gas analysisTrivalent lanthanides (Eu-Ho) complexes with Valsartan ligand were characterized by analytical, thermoanalytical and spectroscopic techniques. The comparison of the thermal decomposition of the compounds were made by plotting a 2D contour map as a facilitator for the data visualization. The thermal behavior was discussed correlating three properties of the compounds: basicity and HOMO-LUMO orbitals of the lanthanides, and the strength of each bond in the molecule. The gaseous products released during the thermal decomposition were: NH3/N2H4, CO2, CO, N2O and an aliphatic compound in air atmosphere; NH3/N2H4, CO2, CO, an unknown compound (two bands between 1200-1100 cm(-1)), and an unsaturated ketone or a mixture of unsaturated hydrocarbon and a ketone in nitrogen atmosphere. The compounds presented an amorphous halo, except holmium; the ligand binds through the tetrazole ring and the carboxylate group binds the lanthanide in monodentate mode; finally, the degree of covalence of the Eu, Dy, and Ho complexes were determined.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Univ Estadual Paulista, Inst Quim, CP 355, BR-14801970 Araraquara, SP, BrazilUniv Estadual Paulista, Fac Ciencias, BR-17033260 Bauru, SP, BrazilUniv Estadual Paulista, Inst Quim, CP 355, BR-14801970 Araraquara, SP, BrazilUniv Estadual Paulista, Fac Ciencias, BR-17033260 Bauru, SP, BrazilFAPESP: 2013/09022-7FAPESP: 2017/14936-9FAPESP: 2018/12463-9FAPESP: 2018/24378-6CNPq: 143246/2017-8CNPq: 421469/2016-1CAPES: 001Elsevier B.V.Universidade Estadual Paulista (Unesp)Ekawa, Bruno [UNESP]Sobral Carvalho, Ana Carina [UNESP]Fernandes, Richard Perosa [UNESP]Carneiro Soares do Nascimento, Andre Luiz [UNESP]Caires, Flavio Junior [UNESP]2020-12-10T17:30:50Z2020-12-10T17:30:50Z2020-04-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article7http://dx.doi.org/10.1016/j.tca.2020.178532Thermochimica Acta. Amsterdam: Elsevier, v. 686, 7 p., 2020.0040-6031http://hdl.handle.net/11449/19532810.1016/j.tca.2020.178532WOS:000528017000004Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengThermochimica Actainfo:eu-repo/semantics/openAccess2021-10-23T07:52:59Zoai:repositorio.unesp.br:11449/195328Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T22:11:38.829431Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Synthesis, thermoanalytical and spectroscopic studies of trivalent lanthanides (Eu-Ho) complexes with the valsartan ligand |
title |
Synthesis, thermoanalytical and spectroscopic studies of trivalent lanthanides (Eu-Ho) complexes with the valsartan ligand |
spellingShingle |
Synthesis, thermoanalytical and spectroscopic studies of trivalent lanthanides (Eu-Ho) complexes with the valsartan ligand Ekawa, Bruno [UNESP] Lanthanides Valsartan Thermal behavior Evolved gas analysis |
title_short |
Synthesis, thermoanalytical and spectroscopic studies of trivalent lanthanides (Eu-Ho) complexes with the valsartan ligand |
title_full |
Synthesis, thermoanalytical and spectroscopic studies of trivalent lanthanides (Eu-Ho) complexes with the valsartan ligand |
title_fullStr |
Synthesis, thermoanalytical and spectroscopic studies of trivalent lanthanides (Eu-Ho) complexes with the valsartan ligand |
title_full_unstemmed |
Synthesis, thermoanalytical and spectroscopic studies of trivalent lanthanides (Eu-Ho) complexes with the valsartan ligand |
title_sort |
Synthesis, thermoanalytical and spectroscopic studies of trivalent lanthanides (Eu-Ho) complexes with the valsartan ligand |
author |
Ekawa, Bruno [UNESP] |
author_facet |
Ekawa, Bruno [UNESP] Sobral Carvalho, Ana Carina [UNESP] Fernandes, Richard Perosa [UNESP] Carneiro Soares do Nascimento, Andre Luiz [UNESP] Caires, Flavio Junior [UNESP] |
author_role |
author |
author2 |
Sobral Carvalho, Ana Carina [UNESP] Fernandes, Richard Perosa [UNESP] Carneiro Soares do Nascimento, Andre Luiz [UNESP] Caires, Flavio Junior [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Ekawa, Bruno [UNESP] Sobral Carvalho, Ana Carina [UNESP] Fernandes, Richard Perosa [UNESP] Carneiro Soares do Nascimento, Andre Luiz [UNESP] Caires, Flavio Junior [UNESP] |
dc.subject.por.fl_str_mv |
Lanthanides Valsartan Thermal behavior Evolved gas analysis |
topic |
Lanthanides Valsartan Thermal behavior Evolved gas analysis |
description |
Trivalent lanthanides (Eu-Ho) complexes with Valsartan ligand were characterized by analytical, thermoanalytical and spectroscopic techniques. The comparison of the thermal decomposition of the compounds were made by plotting a 2D contour map as a facilitator for the data visualization. The thermal behavior was discussed correlating three properties of the compounds: basicity and HOMO-LUMO orbitals of the lanthanides, and the strength of each bond in the molecule. The gaseous products released during the thermal decomposition were: NH3/N2H4, CO2, CO, N2O and an aliphatic compound in air atmosphere; NH3/N2H4, CO2, CO, an unknown compound (two bands between 1200-1100 cm(-1)), and an unsaturated ketone or a mixture of unsaturated hydrocarbon and a ketone in nitrogen atmosphere. The compounds presented an amorphous halo, except holmium; the ligand binds through the tetrazole ring and the carboxylate group binds the lanthanide in monodentate mode; finally, the degree of covalence of the Eu, Dy, and Ho complexes were determined. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-10T17:30:50Z 2020-12-10T17:30:50Z 2020-04-01 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.tca.2020.178532 Thermochimica Acta. Amsterdam: Elsevier, v. 686, 7 p., 2020. 0040-6031 http://hdl.handle.net/11449/195328 10.1016/j.tca.2020.178532 WOS:000528017000004 |
url |
http://dx.doi.org/10.1016/j.tca.2020.178532 http://hdl.handle.net/11449/195328 |
identifier_str_mv |
Thermochimica Acta. Amsterdam: Elsevier, v. 686, 7 p., 2020. 0040-6031 10.1016/j.tca.2020.178532 WOS:000528017000004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Thermochimica Acta |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
7 |
dc.publisher.none.fl_str_mv |
Elsevier B.V. |
publisher.none.fl_str_mv |
Elsevier B.V. |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129402316259328 |