2004
DOI: 10.1590/s0100-40422004000400023
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NCT: pacote de tratamento de coordenadas normais (versão 7)

Abstract: publicado na web em 27/05/04 NCT: NORMAL COORDINATE TREATMENT PACKAGE (VERSION 7). A new version of the normal coordinate analysis package NCT is presented. The upgrade was mainly devised to enable the NCT package to manipulate easily the Hessian matrix evaluated by quantum chemical calculations. Program codes were almost wholly rewritten to be more efficient with GNU Fortran77, or g77, and compiled under FreeBSD and MS-DOS with the DJGPP implementation. Three typical usages of the program package are presente… Show more

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Cited by 6 publications
(5 citation statements)
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“…15 The short-range force field is expressed by two bond stretch force constants, f(OH) and f(MO), and three non-bonded neighbor interactions f(H...H), f(O...H) and f(O...O). Three additional crossterms, f(OH/OH), f(MO/OM) and f(MO/OM)', are also necessary for good reproduction of the experimental fundamentals.…”
Section: Resultsmentioning
confidence: 99%
“…15 The short-range force field is expressed by two bond stretch force constants, f(OH) and f(MO), and three non-bonded neighbor interactions f(H...H), f(O...H) and f(O...O). Three additional crossterms, f(OH/OH), f(MO/OM) and f(MO/OM)', are also necessary for good reproduction of the experimental fundamentals.…”
Section: Resultsmentioning
confidence: 99%
“…Faz-se desacoplar esses osciladores em osciladores harmônicos simples, descritos como coordenadas normais com o uso de propriedades de simetria da molécula e da teoria do grupo (COLTHUP; DALY; WIBERLEY, 1990;HASE, 2004;SALA, 1995).…”
Section: Vibrações Moleculares E Coordenadas Normaisunclassified
“…Utilizando propriedades de simetria e teoria de grupo C 3v , pode-se fatorar as equações em equações de menor grau, mais fáceis de serem resolvidas (COLTHUP; DALY; WIBERLEY, 1990;HASE, 2004;SALA, 1995).…”
Section: Vibrações Moleculares E Coordenadas Normaisunclassified
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“…Todos os cálculos foram realizados por meio do pacote NCT versão 7 (Normal Coordinate Treatment version 7) [28]. Este pacote é constituído por programas que efetuam cálculos relacionados análise de coordenadas normais e correção de anarmonicidade.…”
Section: Capítulo 3 Metodologia Computacionalunclassified