Acta Crystallographica Section C

Crystal Structure Communications

Volume 60, Part 8 (August 2004)

sq1158 scheme

Acta Cryst. (2004). C60, o552-o556 [doi:10.1107/S0108270104013824]

p-Chloro-, p-bromo- and two polymorphs of p-iodoacetophenone

D. Britton and W. W. Brennessel

Abstract: The title p-haloacetophenones, C₈H₇XO (X = Cl, Br and I), have different packing modes. The chloro compound contains HO and HCl contacts, but no ClO contacts. The bromo compound and one polymorph (A) of the iodo compound are isomorphous, with significant XO contacts [BrO = 3.320 (4) Å and IO = 3.374 (5) Å]. In the other polymorph (B) of the iodo compound, the IO distance is 3.082 (4) Å. Both polymorphs contain C-H [bold pi] contacts; these contacts are shorter in A than in B.

Formula: C₈H₇ClO, C₈H₇BrO, C₈H₇IO and C₈H₇IO

Online 10 July 2004


	Structure factor file (CIF format) (82.5 kbytes) Contains datablock ClM

	Structure factor file (CIF format) (83.3 kbytes) Contains datablock BrM

	Structure factor file (CIF format) (89.7 kbytes) Contains datablock IM-A

	Structure factor file (CIF format) (91.4 kbytes) Contains datablock IM-B

Notes:

To open or display or play some files, you may need to set your browser up to use the appropriate software. See the full list of file types for an explanation of the different file types and their related mime types and, where available links to sites from where the appropriate software may be obtained.

The download button will force most browsers to prompt for a file name to store the data on your hard disk.

Where possible, images are represented by thumbnails.