000119009 001__ 119009
000119009 005__ 20240319081023.0
000119009 0247_ $$2doi$$a10.1039/d2cp01621d
000119009 0248_ $$2sideral$$a129663
000119009 037__ $$aART-2022-129663
000119009 041__ $$aeng
000119009 100__ $$0(orcid)0000-0002-2676-8814$$aPires, Elisabet$$uUniversidad de Zaragoza
000119009 245__ $$aNew insights into the interaction of triethylphosphine oxide with silica surface: exchange between different surface species
000119009 260__ $$c2022
000119009 5060_ $$aAccess copy available to the general public$$fUnrestricted
000119009 5203_ $$aAlthough 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.
000119009 536__ $$9info:eu-repo/grantAgreement/ES/DGA-ERDF/E37-20R$$9info:eu-repo/grantAgreement/ES/MICINN/RTI2018-093431-B-100
000119009 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000119009 590__ $$a3.3$$b2022
000119009 592__ $$a0.824$$b2022
000119009 591__ $$aPHYSICS, ATOMIC, MOLECULAR & CHEMICAL$$b9 / 35 = 0.257$$c2022$$dQ2$$eT1
000119009 593__ $$aPhysics and Astronomy (miscellaneous)$$c2022$$dQ1
000119009 591__ $$aCHEMISTRY, PHYSICAL$$b88 / 161 = 0.547$$c2022$$dQ3$$eT2
000119009 593__ $$aPhysical and Theoretical Chemistry$$c2022$$dQ1
000119009 594__ $$a5.9$$b2022
000119009 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000119009 700__ $$0(orcid)0000-0002-0136-5138$$aFraile, José M.
000119009 7102_ $$12013$$2765$$aUniversidad de Zaragoza$$bDpto. Química Orgánica$$cÁrea Química Orgánica
000119009 773__ $$g24 (2022), 16755–16761$$pPhys. chem. chem. phys.$$tPhysical chemistry chemical physics$$x1463-9076
000119009 8564_ $$s2233170$$uhttps://zaguan.unizar.es/record/119009/files/texto_completo.pdf$$yVersión publicada
000119009 8564_ $$s2915500$$uhttps://zaguan.unizar.es/record/119009/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000119009 909CO $$ooai:zaguan.unizar.es:119009$$particulos$$pdriver
000119009 951__ $$a2024-03-18-16:27:15
000119009 980__ $$aARTICLE