Microwave spectrum and non-covalent interactions of the 1, 2, 3, 4-tetrafluorobenzene-water complex

The 1, 2, 3, 4-tetrafluorobenzene-water complex was investigated by pulsed-jet Fourier transform microwave spectroscopy. One isomer was detected in the jet expansion. Ab initio calculations and non-covalent interaction (NCI) analysis were performed to characterize the intermolecular NCIs. In the obs...

Full description

Saved in:
Bibliographic Details
Published in:The Journal of chemical physics 2018-10, Vol.149 (16), p.164306-164306
Main Authors: Li, Xiaolong, Jin, Yan, Gou, Qian, Xia, Zhining, Feng, Gang
Format: Article
Language:English
Subjects:
Benzene
Fluorine
Fourier transforms
Hydrogen atoms
Mathematical analysis
Physics
Ring structures
Rotation
Water chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The 1, 2, 3, 4-tetrafluorobenzene-water complex was investigated by pulsed-jet Fourier transform microwave spectroscopy. One isomer was detected in the jet expansion. Ab initio calculations and non-covalent interaction (NCI) analysis were performed to characterize the intermolecular NCIs. In the observed isomer, the water molecule lies almost in the plane of the benzene ring acting as a proton donor to one of the fluorine atoms and as an acceptor to one of the hydrogen atoms forming a six-membered ring structure. The CH⋯O and H⋯FC bonding distances are determined to be 2.385(1) Å and 2.429(1) Å, respectively. The interaction energy is calculated to be −18.0 kJ mol−1 at the SAPT2+(3)/aug-cc-pVDZ level of theory. The observed transitions exhibit splitting in the order of tens to hundreds of kHz due to the internal rotation of water moiety. The possible tunneling paths of water were investigated by ab initio calculations resulting in a barrier for an internal rotation of about 201 cm−1.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.5048101