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Weak CH⋅⋅⋅F Bridges and Internal Dynamics in the CH 3 F⋅CHF 3 Molecular Complex
Author(s) -
Caminati Walther,
López Juan C.,
Alonso José L.,
Grabow JensUwe
Publication year - 2005
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200500775
Subject(s) - dipole , symmetry (geometry) , amplitude , spinning , hydrogen bond , molecular dynamics , chemical physics , dynamics (music) , physics , hydrogen , chemistry , crystallography , molecular physics , atomic physics , computational chemistry , molecule , quantum mechanics , geometry , polymer chemistry , mathematics , acoustics
A preferred conformation of the internally highly dynamic fluoromethane–trifluoromethane molecular complex results from the stabilization of the two subunits by three weak CH⋅⋅⋅F hydrogen bonds and electrostatic dipole–dipole interactions (see picture). The two subunits are not rigidly locked, but exhibit large amplitude motions by almost freely spinning around their symmetry axes as shown.