Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2
We report the structure and the magnetic properties of a cobalt(II) compound with the amino acid L-threonine, Co(C4H8NO3)2(H2O)2. It crystallizes in the orthorhombic chiral space group C2221, with a = 5.843(5) Å, b = 10.120(10) Å, c = 22.36(3) Å, and Z =) 4. The Co(II) ion is in a deformed octahedra...
| Autores: | , , , , , |
|---|---|
| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2003 |
| País: | Argentina |
| Institución: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/28553 |
| Acceso en línea: | http://hdl.handle.net/11336/28553 |
| Access Level: | acceso abierto |
| Palabra clave: | Epr Co(Ii) Complexes https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
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| dc.title.none.fl_str_mv |
Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2 |
| title |
Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2 |
| spellingShingle |
Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2 Rizzi, Alberto Claudio Epr Co(Ii) Complexes https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| title_short |
Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2 |
| title_full |
Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2 |
| title_fullStr |
Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2 |
| title_full_unstemmed |
Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2 |
| title_sort |
Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2 |
| dc.creator.none.fl_str_mv |
Rizzi, Alberto Claudio Brondino, Carlos Dante Calvo, Rafael Baggio, Ricardo Fortunato Garland, M.T. Rapp, R.E. |
| author |
Rizzi, Alberto Claudio |
| author_facet |
Rizzi, Alberto Claudio Brondino, Carlos Dante Calvo, Rafael Baggio, Ricardo Fortunato Garland, M.T. Rapp, R.E. |
| author_role |
author |
| author2 |
Brondino, Carlos Dante Calvo, Rafael Baggio, Ricardo Fortunato Garland, M.T. Rapp, R.E. |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Epr Co(Ii) Complexes https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| topic |
Epr Co(Ii) Complexes https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| description |
We report the structure and the magnetic properties of a cobalt(II) compound with the amino acid L-threonine, Co(C4H8NO3)2(H2O)2. It crystallizes in the orthorhombic chiral space group C2221, with a = 5.843(5) Å, b = 10.120(10) Å, c = 22.36(3) Å, and Z =) 4. The Co(II) ion is in a deformed octahedral environment on a 2-fold symmetry axis parallel to the crystallographic axis b. It is bonded to two threonine molecules in a bidentate fashion, via one oxygen from the carboxylate end and the R-amino nitrogen. A water molecule occupies the third independent site.<br />The Co(II) ions are arranged in layers with intralayer and interlayer distances of 5.84 and 11.18 Å, respectively. Magnetic measurements data reflect the molecular character of a compound with weak exchange interactions. EPR measurements in polycrystalline and single-crystal samples indicate a distorted axial symmetry around the Co(II) ion, as expected from the structural results. Eigenvalues and eigenvectors of the g tensor are determined. The measured principal g values (5.81, 4.56, and 2.23) reflect a high-spin Co(II) ion, as suggested by the type of ligands and the molecular symmetry. From the incomplete collapse of the hyperfine structure we estimate 0.25 <<br />|J| < 1.2 cm-1 between neighboring Co(II) ions within a layer, transmitted through H-bonds. A higher limit |J´| < 0.07 cm-1 is estimated for the exchange interactions between Co(II) ions in neighboring layers. From a global fit of a spin Hamiltonian with spin 3/2 to magnetization and EPR data we obtain a zero field splitting d ~ 231 cm-1 between the two lowest doublet states. The results are discussed in terms of the molecular and electronic structure of the compound. |
| publishDate |
2003 |
| dc.date.none.fl_str_mv |
2003-12 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/28553 Rizzi, Alberto Claudio; Brondino, Carlos Dante; Calvo, Rafael; Baggio, Ricardo Fortunato; Garland, M.T.; et al.; Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2; American Chemical Society; Inorganic Chemistry; 42; 12-2003; 4409-4416 0020-1669 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/28553 |
| identifier_str_mv |
Rizzi, Alberto Claudio; Brondino, Carlos Dante; Calvo, Rafael; Baggio, Ricardo Fortunato; Garland, M.T.; et al.; Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2; American Chemical Society; Inorganic Chemistry; 42; 12-2003; 4409-4416 0020-1669 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/doi/10.1021/ic026111b |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
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application/pdf application/pdf application/pdf application/pdf application/pdf |
| dc.publisher.none.fl_str_mv |
American Chemical Society |
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American Chemical Society |
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reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
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Consejo Nacional de Investigaciones Científicas y Técnicas |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1799195081583886336 |
| spelling |
Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2Rizzi, Alberto ClaudioBrondino, Carlos DanteCalvo, RafaelBaggio, Ricardo FortunatoGarland, M.T.Rapp, R.E.EprCo(Ii)Complexeshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1We report the structure and the magnetic properties of a cobalt(II) compound with the amino acid L-threonine, Co(C4H8NO3)2(H2O)2. It crystallizes in the orthorhombic chiral space group C2221, with a = 5.843(5) Å, b = 10.120(10) Å, c = 22.36(3) Å, and Z =) 4. The Co(II) ion is in a deformed octahedral environment on a 2-fold symmetry axis parallel to the crystallographic axis b. It is bonded to two threonine molecules in a bidentate fashion, via one oxygen from the carboxylate end and the R-amino nitrogen. A water molecule occupies the third independent site.<br />The Co(II) ions are arranged in layers with intralayer and interlayer distances of 5.84 and 11.18 Å, respectively. Magnetic measurements data reflect the molecular character of a compound with weak exchange interactions. EPR measurements in polycrystalline and single-crystal samples indicate a distorted axial symmetry around the Co(II) ion, as expected from the structural results. Eigenvalues and eigenvectors of the g tensor are determined. The measured principal g values (5.81, 4.56, and 2.23) reflect a high-spin Co(II) ion, as suggested by the type of ligands and the molecular symmetry. From the incomplete collapse of the hyperfine structure we estimate 0.25 <<br />|J| < 1.2 cm-1 between neighboring Co(II) ions within a layer, transmitted through H-bonds. A higher limit |J´| < 0.07 cm-1 is estimated for the exchange interactions between Co(II) ions in neighboring layers. From a global fit of a spin Hamiltonian with spin 3/2 to magnetization and EPR data we obtain a zero field splitting d ~ 231 cm-1 between the two lowest doublet states. The results are discussed in terms of the molecular and electronic structure of the compound.Fil: Rizzi, Alberto Claudio. Universidad Nacional del Litoral. Facultad de Bioquímica y Ciencias Biológicas. Departamento de Física; ArgentinaFil: Brondino, Carlos Dante. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Calvo, Rafael. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Santa Fe. Instituto de Desarrollo Tecnológico para la Industria Química. Universidad Nacional del Litoral. Instituto de Desarrollo Tecnológico para la Industria Química; ArgentinaFil: Baggio, Ricardo Fortunato. Comisión Nacional de Energía Atómica; ArgentinaFil: Garland, M.T.. Universidad de Chile; ChileFil: Rapp, R.E.. Universidade Federal do Rio de Janeiro; BrasilAmerican Chemical Society2003-12info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/28553Rizzi, Alberto Claudio; Brondino, Carlos Dante; Calvo, Rafael; Baggio, Ricardo Fortunato; Garland, M.T.; et al.; Structure and Magnetic Properties of Layered High-Spin Co(II)(L-threonine)2(H2O)2; American Chemical Society; Inorganic Chemistry; 42; 12-2003; 4409-44160020-1669CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1021/ic026111binfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:43:02Zoai:ri.conicet.gov.ar:11336/28553instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:43:02.286CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
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15.811543 |