An electron diffraction investigation of the molecular structure of gaseous acetic anhydride

A survey is given of the methods employed in Leiden for determining structural parameters by electron diffraction of gases. The radial distribution function of acetic anhydride can be interpreted in terms of two closely related models A and B, both having symmetry C 2, but mainly differing in valenc...

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Bibliographic Details
Published in:Journal of molecular structure 1971-01, Vol.7 (3), p.421-429
Main Authors: Vledder, H.J., Mijlhoff, F.C., Leyte, J.C., Romers, C.
Format: Article
Language:English
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Summary:A survey is given of the methods employed in Leiden for determining structural parameters by electron diffraction of gases. The radial distribution function of acetic anhydride can be interpreted in terms of two closely related models A and B, both having symmetry C 2, but mainly differing in valency angles around the carbonyl carbon atoms. Statistical tests fail to discriminate between these models, but chemical arguments are in favour of model B. The structure in terms of model B is characterized by a dihedral angle of 78.8° between the two planar acetyl fragments. The bond lengths C-O, CO and C-Care 1.405,1.183 and 1.495 Å, respectively, the valency angles C-O-C, O-CO and O-C-C are 115.8, 121.7 and 108.3°, respectively.
ISSN:0022-2860
1872-8014
DOI:10.1016/0022-2860(71)87012-6