New insights into the interaction of triethylphosphine oxide with silica surface: exchange between different surface species
Pires, Elisabet (Universidad de Zaragoza) ; Fraile, José M.
Resumen: Although chemical shift values of triethylphosphine oxide (TEPO) adsorbed on acidic solids have been considered as an indication of acid strength, in this work we demonstrate that the chemical shift depends also on the adsorbed amount of TEPO. On silica, the presence of three different adsorbed species, physisorbed on non-acidic surface, chemisorbed through a single H bond and chemisorbed through two H bonds, can be detected by the correlation of the P-31 chemical shift with the TEPO adsorbed amount. TEPO chemical exchange between the different sites is demonstrated by the single NMR signal obtained in all the cases, and also by the variation of the line width, which is broader at low surface coverage due to the slower chemical exchange because of the longer average distance between surface sites.
Idioma: Inglés
DOI: 10.1039/d2cp01621d
Año: 2022
Publicado en: Physical chemistry chemical physics 24 (2022), 16755–16761
ISSN: 1463-9076
Factor impacto JCR: 3.3 (2022)
Categ. JCR: PHYSICS, ATOMIC, MOLECULAR & CHEMICAL rank: 9 / 35 = 0.257 (2022) - Q2 - T1
Categ. JCR: CHEMISTRY, PHYSICAL rank: 88 / 161 = 0.547 (2022) - Q3 - T2
Factor impacto CITESCORE: 5.9 - Chemistry (Q2) - Physics and Astronomy (Q1)
Factor impacto SCIMAGO: 0.824 - Physics and Astronomy (miscellaneous) (Q1) - Physical and Theoretical Chemistry (Q1)
Financiación: info:eu-repo/grantAgreement/ES/DGA-ERDF/E37-20R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/RTI2018-093431-B-100
Tipo y forma: Article (Published version)
Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
Exportado de SIDERAL (2024-03-18-16:27:15)
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Idioma: Inglés
DOI: 10.1039/d2cp01621d
Año: 2022
Publicado en: Physical chemistry chemical physics 24 (2022), 16755–16761
ISSN: 1463-9076
Factor impacto JCR: 3.3 (2022)
Categ. JCR: PHYSICS, ATOMIC, MOLECULAR & CHEMICAL rank: 9 / 35 = 0.257 (2022) - Q2 - T1
Categ. JCR: CHEMISTRY, PHYSICAL rank: 88 / 161 = 0.547 (2022) - Q3 - T2
Factor impacto CITESCORE: 5.9 - Chemistry (Q2) - Physics and Astronomy (Q1)
Factor impacto SCIMAGO: 0.824 - Physics and Astronomy (miscellaneous) (Q1) - Physical and Theoretical Chemistry (Q1)
Financiación: info:eu-repo/grantAgreement/ES/DGA-ERDF/E37-20R
Financiación: info:eu-repo/grantAgreement/ES/MICINN/RTI2018-093431-B-100
Tipo y forma: Article (Published version)
Área (Departamento): Área Química Orgánica (Dpto. Química Orgánica)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2024-03-18-16:27:15)
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Record created 2022-10-20, last modified 2024-03-19