The rotational spectra of three isotopologues of the 1 : 1 complex between difluoromethane and formaldehyde have been observed and assigned using pulsed jet Fourier transform microwave spectroscopy. The formaldehyde lies in the FCF plane of difluoromethane, linked through a C–H F and a bifurcated CH2 O weak hydrogen bonds. The rotational transitions are split into two component lines with a relative intensity ratio of 1 : 3, due to the internal rotation of the formaldehyde moiety along its symmetry axis. The barrier to this motion has been estimated by using a flexible model to be V2 = 180(10) cm1.
Qian Gou, Gang Feng, Luca Evangelisti, Montserrat Vallejo-López, Alberto Lesarri, Emilio J. Cocinero, et al. (2013). Non-bonding interactions and internal dynamics in CH2F2⋯H2CO: a rotational and model calculations study. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 15, 6714-6718 [10.1039/c3cp50306b].
Non-bonding interactions and internal dynamics in CH2F2⋯H2CO: a rotational and model calculations study
GOU, QIAN;FENG, GANG;EVANGELISTI, LUCA;CAMINATI, WALTHER
2013
Abstract
The rotational spectra of three isotopologues of the 1 : 1 complex between difluoromethane and formaldehyde have been observed and assigned using pulsed jet Fourier transform microwave spectroscopy. The formaldehyde lies in the FCF plane of difluoromethane, linked through a C–H F and a bifurcated CH2 O weak hydrogen bonds. The rotational transitions are split into two component lines with a relative intensity ratio of 1 : 3, due to the internal rotation of the formaldehyde moiety along its symmetry axis. The barrier to this motion has been estimated by using a flexible model to be V2 = 180(10) cm1.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
