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X‐Ray Study of the Deformation Density in Tetrafluoroterephthalodinitrile: Weak Bonding Density in the C, F‐Bond
Author(s) -
Dunitz Jack D.,
Schweizer W. Bernd,
Seiler Paul
Publication year - 1983
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19830660113
Subject(s) - chemistry , crystallography , deformation (meteorology) , diffraction , bond , x ray , chemical bond , molecular physics , optics , physics , composite material , organic chemistry , materials science , finance , economics
A careful deformation density study of tetrafluoroterephthalodinitrile at 98K has been made from X‐ray diffraction measurements. Prominent ‘bonding density’ peaks are found at or near the mid‐points of the C, C‐ and C, N‐bonds but not for the C, F‐bonds, which show only weak density. Similarly weak bonding densities for C, F‐bonds are also found for 1, 1, 4, 4‐tetrafluorocyclohexane. The possible significance of these results in terms of bonding theory is briefly discussed.