Utilize este identificador para referenciar este registo:
https://hdl.handle.net/10316/27412
Título: | Molecular insight into the amine–water interaction: a combined vibrational, energetic and NBO/NEDA study | Autor: | Jesus, A. J. Lopes Redinha, J. S. |
Palavras-chave: | Cyclohexyldiamines; Hydrates; Hydrogen bonding; Vibrational analysis; Natural Bond Orbitals (NBO) | Data: | 1-Nov-2013 | Editora: | Elsevier | Citação: | JESUS, A. J. Lopes; REDINHA, J. S. - Molecular insight into the amine–water interaction: a combined vibrational, energetic and NBO/NEDA study. "Computational and Theoretical Chemistry". ISSN 2210-271X. Vol. 1023 (2013) p. 74-82 | Título da revista, periódico, livro ou evento: | Computational and Theoretical Chemistry | Volume: | 1023 | Resumo: | Hydrates of the neutral and protonated cyclohexylamine and of the cyclohexyldiamine isomers in the neutral, mono and diprotonated forms are studied theoretically at the B3LYP/aug-cc-pVDZ level of theory. Vibrational analysis of the optimized complexes shows variations in the frequency and intensity of the N–H and O–H stretching modes induced by charge variation and groups’ proximity. These results are quantified by calculating the energies of complex formation (ΔEcomplex). It is shown that the values obtained for this quantity result from the balance between water association (ΔEass) and amine–water interactions (ΔEint). Amino groups’ approximation leads to values of ΔEint different from those calculated by adding their individual contribution. This behavior is explained by the application of the Natural energy decomposition analysis (NEDA) and Natural Bond Orbitals (NBO) theory to the complexes and to the amine–water pairs. The Atoms in Molecules (AIM) theory is also used to interpret the hydration of the diprotonated diamines. Special attention is given to the characterization of the hydrogen bonds’ nature, as well as to the effect of the hydrogen bonding cooperativity and charges proximity on the amine–water interaction. | URI: | https://hdl.handle.net/10316/27412 | ISSN: | 2210-271X | DOI: | 10.1016/j.comptc.2013.09.006 | Direitos: | openAccess |
Aparece nas coleções: | FFUC- Artigos em Revistas Internacionais FCTUC Química - Artigos em Revistas Internacionais |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
Molecular insight into the amine-water interaction.pdf | 737.95 kB | Adobe PDF | Ver/Abrir |
Citações SCOPUSTM
10
Visto em 9/nov/2022
Citações WEB OF SCIENCETM
10
11
Visto em 2/mai/2023
Visualizações de página 50
532
Visto em 23/abr/2024
Downloads 50
572
Visto em 23/abr/2024
Google ScholarTM
Verificar
Altmetric
Altmetric
Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.