2-(2-Acetyl­amino-5-chloro­phenyl)-2,2-difluoro­ethanoic acid and 2-(2-acetyl­amino-5-methyl­phenyl)-2,2-difluoro­ethanoic acid, and 2-(2-acetyl­amino­phenyl)-2,2-difluoro-N-phenyl­acetamide and 2-(2-acetyl­amino­phenyl)-N-(4-chloro­phen­yl)-2,2-difluoro­acetamide: examples of variation in mol­ecular packing and hydrogen-bonding motif induced by substituent change

Boechat, N.; Maciel, L.C.; Pinto, A.C.; Wardell, S.M.S.V.; Skakle, J.M.S.; Howie, R.A.

doi:10.1107/S0108270105007547

Acta Crystallographica Section C
Acta Crystallographica
Section C STRUCTURAL CHEMISTRY

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Figure 13
Intermolecular contacts within a layer of molecules of (IV)

. Displacement ellipsoids are drawn at the 20% probability level. For convenience, the origin of the cell has been shifted to (− $[{1\over 2}]$ , 0, 0). Dashed lines indicate the join of the centroids of overlapping benzene rings (see Comment) as well as hydrogen bonds. For clarity, bonds to atoms C3–C6 and C11–C16 are shown as thin lines. Coding is the same as for Figs. 6

–9

and 11

STRUCTURAL
CHEMISTRY

ISSN: 2053-2296

Volume 61| Part 5| April 2005| Pages o270-o275

doi:10.1107/S0108270105007547

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