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dc.contributor.authorBorba, Ana-
dc.contributor.authorGómez-Zavaglia, Andrea-
dc.contributor.authorLapinski, Leszek-
dc.contributor.authorFausto, R.-
dc.identifier.citationVibrational Spectroscopy. 36:1 (2004) 79-88en_US
dc.description.abstractMethyl lactate [CH(CH3)OHC(=O)OCH3] conformational space was investigated by extensive DFT/B3LYP/6-311++G(d,p) and MP2/6-31++G(d,p) calculations and matrix-isolation FTIR spectroscopy in argon and xenon matrices. From the seven different conformers predicted by the calculations, two forms (the most stable conformers yielded by the calculations: SsC and GskC, where the letters refer to the conformations assumed by the HOCC, OCC=O and O=COC dihedrals, respectively) were observed and characterized spectroscopically. Conformer interconversion pathways were also theoretically investigated. The low calculated barrier associated with the G'sk'C-->GskC conversion (~1 kJ mol-1) explains the absence of the third most stable form (G'sk'C) of methyl lactate in low-temperature matrices. Deposition of methyl lactate at different temperatures, together with the theoretical data, aided to the full assignment of the observed spectra.en_US
dc.subjectMethyl lactateen_US
dc.subjectConformational analysisen_US
dc.subjectMatrix isolationen_US
dc.subjectFTIR spectroscopyen_US
dc.subjectDFT(B3LYP) and MP2 calculationsen_US
dc.titleMatrix isolation FTIR spectroscopic and theoretical study of methyl lactateen_US
item.fulltextCom Texto completo-
item.grantfulltextopen- de Ciências e Tecnologia, Universidade de Coimbra- de Coimbra- Chemistry Center-
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais
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