Ab Initio correlated all electron Dirac-Fock calculations for eka-francium fluoride (E119F)
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Journal of the Brazilian Chemical Society (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000600015 |
Resumo: | Results obtained with correlated 4-component Dirac-Fock calculations for element E119 (eka-francium) fluoride with stable and accurate basis set (prolapse-free) are reported in this work. At CCSD(T) level, the equilibrium distance Re, harmonic frequency ωe and dissociation energy De are 2.432 Å, 354.97 cm-1 and 116.92 kcal mol-1, respectively. A 4-component prolapse free basis set for E119, an accurate analytical potential energy curve and vibrational spectra from CCSD(T) data are also reported. Our results suggest that E119F should be less ionic than lighter alkaline fluoride homologues, in contrast to the common chemical belief based on periodic trends - it would be expected in this molecule the most ionic bond possible. We also found that the charge model correction to neglect SS integrals leads to negligible errors and speed up calculations close to three times at CCSD(T) level and close to 4 times at DFT/B3LYP level. |
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Ab Initio correlated all electron Dirac-Fock calculations for eka-francium fluoride (E119F)super heavy elements (SHE)4-component relativistic molecular calculations4-component gaussian basis setsrelativistic effects in chemistryResults obtained with correlated 4-component Dirac-Fock calculations for element E119 (eka-francium) fluoride with stable and accurate basis set (prolapse-free) are reported in this work. At CCSD(T) level, the equilibrium distance Re, harmonic frequency ωe and dissociation energy De are 2.432 Å, 354.97 cm-1 and 116.92 kcal mol-1, respectively. A 4-component prolapse free basis set for E119, an accurate analytical potential energy curve and vibrational spectra from CCSD(T) data are also reported. Our results suggest that E119F should be less ionic than lighter alkaline fluoride homologues, in contrast to the common chemical belief based on periodic trends - it would be expected in this molecule the most ionic bond possible. We also found that the charge model correction to neglect SS integrals leads to negligible errors and speed up calculations close to three times at CCSD(T) level and close to 4 times at DFT/B3LYP level.Sociedade Brasileira de Química2012-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000600015Journal of the Brazilian Chemical Society v.23 n.6 2012reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532012000600015info:eu-repo/semantics/openAccessMiranda,Patrícia S.Mendes,Anna Paula S.Gomes,Jose S.Alves,Claudio N.Souza,Aguinaldo R. deSambrano,Julio R.Gargano,RicardoMacedo,Luiz Guilherme M. deeng2012-07-13T00:00:00Zoai:scielo:S0103-50532012000600015Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2012-07-13T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Ab Initio correlated all electron Dirac-Fock calculations for eka-francium fluoride (E119F) |
title |
Ab Initio correlated all electron Dirac-Fock calculations for eka-francium fluoride (E119F) |
spellingShingle |
Ab Initio correlated all electron Dirac-Fock calculations for eka-francium fluoride (E119F) Miranda,Patrícia S. super heavy elements (SHE) 4-component relativistic molecular calculations 4-component gaussian basis sets relativistic effects in chemistry |
title_short |
Ab Initio correlated all electron Dirac-Fock calculations for eka-francium fluoride (E119F) |
title_full |
Ab Initio correlated all electron Dirac-Fock calculations for eka-francium fluoride (E119F) |
title_fullStr |
Ab Initio correlated all electron Dirac-Fock calculations for eka-francium fluoride (E119F) |
title_full_unstemmed |
Ab Initio correlated all electron Dirac-Fock calculations for eka-francium fluoride (E119F) |
title_sort |
Ab Initio correlated all electron Dirac-Fock calculations for eka-francium fluoride (E119F) |
author |
Miranda,Patrícia S. |
author_facet |
Miranda,Patrícia S. Mendes,Anna Paula S. Gomes,Jose S. Alves,Claudio N. Souza,Aguinaldo R. de Sambrano,Julio R. Gargano,Ricardo Macedo,Luiz Guilherme M. de |
author_role |
author |
author2 |
Mendes,Anna Paula S. Gomes,Jose S. Alves,Claudio N. Souza,Aguinaldo R. de Sambrano,Julio R. Gargano,Ricardo Macedo,Luiz Guilherme M. de |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Miranda,Patrícia S. Mendes,Anna Paula S. Gomes,Jose S. Alves,Claudio N. Souza,Aguinaldo R. de Sambrano,Julio R. Gargano,Ricardo Macedo,Luiz Guilherme M. de |
dc.subject.por.fl_str_mv |
super heavy elements (SHE) 4-component relativistic molecular calculations 4-component gaussian basis sets relativistic effects in chemistry |
topic |
super heavy elements (SHE) 4-component relativistic molecular calculations 4-component gaussian basis sets relativistic effects in chemistry |
description |
Results obtained with correlated 4-component Dirac-Fock calculations for element E119 (eka-francium) fluoride with stable and accurate basis set (prolapse-free) are reported in this work. At CCSD(T) level, the equilibrium distance Re, harmonic frequency ωe and dissociation energy De are 2.432 Å, 354.97 cm-1 and 116.92 kcal mol-1, respectively. A 4-component prolapse free basis set for E119, an accurate analytical potential energy curve and vibrational spectra from CCSD(T) data are also reported. Our results suggest that E119F should be less ionic than lighter alkaline fluoride homologues, in contrast to the common chemical belief based on periodic trends - it would be expected in this molecule the most ionic bond possible. We also found that the charge model correction to neglect SS integrals leads to negligible errors and speed up calculations close to three times at CCSD(T) level and close to 4 times at DFT/B3LYP level. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-06-01 |
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=S0103-50532012000600015 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532012000600015 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0103-50532012000600015 |
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 |
Sociedade Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Journal of the Brazilian Chemical Society v.23 n.6 2012 reponame:Journal of the Brazilian Chemical Society (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Journal of the Brazilian Chemical Society (Online) |
collection |
Journal of the Brazilian Chemical Society (Online) |
repository.name.fl_str_mv |
Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
||office@jbcs.sbq.org.br |
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1750318173512531968 |