Related Experiment Video
Updated: Mar 26, 2026

From Molecules to Materials: Engineering New Ionic Liquid Crystals Through Halogen Bonding
Published on: March 24, 2018
Rotational Study of Dimethyl Ether-Chlorotrifluoroethylene: Lone Pair···π Interaction Links the Two Subunits
Lorenzo Spada1, Qian Gou1, Yannick Geboes2
1Dipartimento di Chimica "G. Ciamician" dell'Università , Via Selmi 2, I-40126 Bologna, Italy.
Abstract:
The rotational spectra of two isotopologues of chlorotrifluoroethylene-dimethyl ether show that the two constituent molecules are held together by a lone pair···π interaction. The ether oxygen is linked to the (CF2) carbon atom, with a C-O distance of 2.908 Å.
Related Concept Videos
VSEPR Theory and the Effect of Lone Pairs
VSEPR Theory and the Basic Shapes
Radicals: Electronic Structure and Geometry
Accordingly, the structure of a trivalent radical lies between the geometries of carbocations and carbanions. An sp2-hybridized carbocation is trigonal planar, while an sp3-hybridized carbanion is trigonal pyramidal. Here, the difference in geometry is...
Predicting Molecular Geometry
Hybridization of Atomic Orbitals I
Molecular Shape and Polarity

