The rotational spectrum of the acetic acid-fluoroacetic acid bimolecule was measured by using a pulsed jet Fourier transform microwave spectrometer. One conformer, in which fluoroacetic acid is in trans form, has been observed. The rotational transitions are split into two component lines, due to the internal rotation of the methyl group of acetic acid. From these splittings, the corresponding V3 barrier has been determined. The dissociation energy of this complex has been estimated to 66 kJ/mol. An increase of the distance between the two monomers upon the OH → OD substitution (Ubbelohde effect) has been observed.
Rotational study of the bimolecule acetic acid-fluoroacetic acid / Feng, Gang; Gou, Qian; Evangelisti, Luca; Caminati, Walther. - In: CHEMICAL PHYSICS LETTERS. - ISSN 0009-2614. - STAMPA. - 667:(2017), pp. 154-157. [10.1016/j.cplett.2016.11.033]
Rotational study of the bimolecule acetic acid-fluoroacetic acid
FENG, GANG;GOU, QIAN;EVANGELISTI, LUCA;CAMINATI, WALTHER
2017
Abstract
The rotational spectrum of the acetic acid-fluoroacetic acid bimolecule was measured by using a pulsed jet Fourier transform microwave spectrometer. One conformer, in which fluoroacetic acid is in trans form, has been observed. The rotational transitions are split into two component lines, due to the internal rotation of the methyl group of acetic acid. From these splittings, the corresponding V3 barrier has been determined. The dissociation energy of this complex has been estimated to 66 kJ/mol. An increase of the distance between the two monomers upon the OH → OD substitution (Ubbelohde effect) has been observed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
