Issue 7, 2019

Non covalent interactions stabilizing the chiral dimer of CH2ClF: a rotational study

Abstract

We report the rotational spectra of three isotopologues of the dimer of chlorofluoromethane, namely CH235ClF–CH235ClF, CH235ClF–CH237ClF and CH237ClF–CH235ClF. The assigned (most stable) conformer is chiral (C1 symmetry) and displays a network of two C–H⋯Cl–C and one C–H⋯F–C weak hydrogen bonds, combined with a Cl⋯F halogen bond. The hyperfine structures due to the quadrupolar effects of the two non-equivalent 35Cl (or 37Cl) atoms have been fully resolved, leading to an accurate determination of two sets of diagonal and of some mixed quadrupole coupling constants. Information on the rs positions of the two Cl atoms and on the structural parameters of the hydrogen bonds has been obtained. The dissociation energy of the complex has been estimated as 5.9 kJ mol−1.

Graphical abstract: Non covalent interactions stabilizing the chiral dimer of CH2ClF: a rotational study

Supplementary files

Article information

Article type
Paper
Submitted
09 okt 2018
Accepted
27 dec 2018
First published
27 dec 2018

Phys. Chem. Chem. Phys., 2019,21, 3695-3700

Non covalent interactions stabilizing the chiral dimer of CH2ClF: a rotational study

L. B. Favero, A. Maris, S. Melandri, P. Ottaviani and W. Caminati, Phys. Chem. Chem. Phys., 2019, 21, 3695 DOI: 10.1039/C8CP06288A

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