Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities
- Autores
- Iramain, Maximiliano Alberto; Brandan, Silvia Antonia
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The structural, electronic, topological and vibrational properties were studied for F-pyrazine, 3-fluoropyrazine-2-carboxilic acidand 3-fluoropyrazine-2-carboxamide in gas phase by using the hybrid B3LYP/6-311++G** level of theory. Theoretically, twoconformations were found for both acid and amide species being their C2 conformations, with C symmetries, the most stable. SThe NBO study reveals the high stability of the acid species due to the two DET and DET interactions not observed in the amide LP* LP LP*species. The AIM analysis supports the high stabilities of both C2 conformers due to the halogen bonds formation where thetopological properties are higher for the acid species, in very good concordance with the higher total energy observed by NBOcalculations. The frontier orbitals predict a higher reactivity for the amide species while the descriptors evidence the highernucleophilicity and electrophilicity indexes for the acid species. On the other hand, the C2-N3 stretching mode in FP is predicted athigher wavenumbers than pyrazine while in the acid and amide species this stretching mode is predicted with partial double bondat lower wavenumbers. The tentative assignments for the acid and amide species were performed. The force constants calculatedshow strongly dependence from their geometrical parameters.
Fil: Iramain, Maximiliano Alberto. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química Inorgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina
Fil: Brandan, Silvia Antonia. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química Inorgánica; Argentina - Materia
-
FLUORPIRAZINE
VIBRATIONAL SPECTRA
MOLECULAR STRUCTURE
DFT CALCULATIONS - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/67621
Ver los metadatos del registro completo
id |
CONICETDig_16d4dd9efa33531095a8caf8d0e847cd |
---|---|
oai_identifier_str |
oai:ri.conicet.gov.ar:11336/67621 |
network_acronym_str |
CONICETDig |
repository_id_str |
3498 |
network_name_str |
CONICET Digital (CONICET) |
spelling |
Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activitiesIramain, Maximiliano AlbertoBrandan, Silvia AntoniaFLUORPIRAZINEVIBRATIONAL SPECTRAMOLECULAR STRUCTUREDFT CALCULATIONShttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The structural, electronic, topological and vibrational properties were studied for F-pyrazine, 3-fluoropyrazine-2-carboxilic acidand 3-fluoropyrazine-2-carboxamide in gas phase by using the hybrid B3LYP/6-311++G** level of theory. Theoretically, twoconformations were found for both acid and amide species being their C2 conformations, with C symmetries, the most stable. SThe NBO study reveals the high stability of the acid species due to the two DET and DET interactions not observed in the amide LP* LP LP*species. The AIM analysis supports the high stabilities of both C2 conformers due to the halogen bonds formation where thetopological properties are higher for the acid species, in very good concordance with the higher total energy observed by NBOcalculations. The frontier orbitals predict a higher reactivity for the amide species while the descriptors evidence the highernucleophilicity and electrophilicity indexes for the acid species. On the other hand, the C2-N3 stretching mode in FP is predicted athigher wavenumbers than pyrazine while in the acid and amide species this stretching mode is predicted with partial double bondat lower wavenumbers. The tentative assignments for the acid and amide species were performed. The force constants calculatedshow strongly dependence from their geometrical parameters.Fil: Iramain, Maximiliano Alberto. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química Inorgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; ArgentinaFil: Brandan, Silvia Antonia. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química Inorgánica; ArgentinaWorld Wide Journals International2017-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/67621Iramain, Maximiliano Alberto; Brandan, Silvia Antonia; Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities; World Wide Journals International; Paripex; 6; 9; 9-2017; 613-6252250-1991CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.worldwidejournals.com/paripex/recent_issues_pdf/2017/September/September_2017_1505475542__118.pdfinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:18:25Zoai:ri.conicet.gov.ar:11336/67621instacron: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:34982025-09-29 10:18:25.657CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities |
title |
Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities |
spellingShingle |
Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities Iramain, Maximiliano Alberto FLUORPIRAZINE VIBRATIONAL SPECTRA MOLECULAR STRUCTURE DFT CALCULATIONS |
title_short |
Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities |
title_full |
Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities |
title_fullStr |
Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities |
title_full_unstemmed |
Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities |
title_sort |
Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities |
dc.creator.none.fl_str_mv |
Iramain, Maximiliano Alberto Brandan, Silvia Antonia |
author |
Iramain, Maximiliano Alberto |
author_facet |
Iramain, Maximiliano Alberto Brandan, Silvia Antonia |
author_role |
author |
author2 |
Brandan, Silvia Antonia |
author2_role |
author |
dc.subject.none.fl_str_mv |
FLUORPIRAZINE VIBRATIONAL SPECTRA MOLECULAR STRUCTURE DFT CALCULATIONS |
topic |
FLUORPIRAZINE VIBRATIONAL SPECTRA MOLECULAR STRUCTURE DFT CALCULATIONS |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
The structural, electronic, topological and vibrational properties were studied for F-pyrazine, 3-fluoropyrazine-2-carboxilic acidand 3-fluoropyrazine-2-carboxamide in gas phase by using the hybrid B3LYP/6-311++G** level of theory. Theoretically, twoconformations were found for both acid and amide species being their C2 conformations, with C symmetries, the most stable. SThe NBO study reveals the high stability of the acid species due to the two DET and DET interactions not observed in the amide LP* LP LP*species. The AIM analysis supports the high stabilities of both C2 conformers due to the halogen bonds formation where thetopological properties are higher for the acid species, in very good concordance with the higher total energy observed by NBOcalculations. The frontier orbitals predict a higher reactivity for the amide species while the descriptors evidence the highernucleophilicity and electrophilicity indexes for the acid species. On the other hand, the C2-N3 stretching mode in FP is predicted athigher wavenumbers than pyrazine while in the acid and amide species this stretching mode is predicted with partial double bondat lower wavenumbers. The tentative assignments for the acid and amide species were performed. The force constants calculatedshow strongly dependence from their geometrical parameters. Fil: Iramain, Maximiliano Alberto. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química Inorgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Tucumán; Argentina Fil: Brandan, Silvia Antonia. Universidad Nacional de Tucumán. Facultad de Bioquímica, Química y Farmacia. Instituto de Química Inorgánica; Argentina |
description |
The structural, electronic, topological and vibrational properties were studied for F-pyrazine, 3-fluoropyrazine-2-carboxilic acidand 3-fluoropyrazine-2-carboxamide in gas phase by using the hybrid B3LYP/6-311++G** level of theory. Theoretically, twoconformations were found for both acid and amide species being their C2 conformations, with C symmetries, the most stable. SThe NBO study reveals the high stability of the acid species due to the two DET and DET interactions not observed in the amide LP* LP LP*species. The AIM analysis supports the high stabilities of both C2 conformers due to the halogen bonds formation where thetopological properties are higher for the acid species, in very good concordance with the higher total energy observed by NBOcalculations. The frontier orbitals predict a higher reactivity for the amide species while the descriptors evidence the highernucleophilicity and electrophilicity indexes for the acid species. On the other hand, the C2-N3 stretching mode in FP is predicted athigher wavenumbers than pyrazine while in the acid and amide species this stretching mode is predicted with partial double bondat lower wavenumbers. The tentative assignments for the acid and amide species were performed. The force constants calculatedshow strongly dependence from their geometrical parameters. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-09 |
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/11336/67621 Iramain, Maximiliano Alberto; Brandan, Silvia Antonia; Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities; World Wide Journals International; Paripex; 6; 9; 9-2017; 613-625 2250-1991 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/67621 |
identifier_str_mv |
Iramain, Maximiliano Alberto; Brandan, Silvia Antonia; Effect of carboxyl and carboxamide substituent groups on fluorinated pyrazine species with antitubercular activities; World Wide Journals International; Paripex; 6; 9; 9-2017; 613-625 2250-1991 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.worldwidejournals.com/paripex/recent_issues_pdf/2017/September/September_2017_1505475542__118.pdf |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf |
dc.publisher.none.fl_str_mv |
World Wide Journals International |
publisher.none.fl_str_mv |
World Wide Journals International |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
_version_ |
1844614145954021376 |
score |
13.070432 |