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1,2-Diiodo-4,5-dimethyl-benzene.

ABSTRACT: The structure of the title compound, C(8)H(8)I(2), conforms closely to the mm2 symmetry expected for the free mol-ecule and is the first reported structure of a diiodo-dimethyl-benzene. Repulsion by neighboring I atoms and the neighboring methyl groups opposite to them results in a slight elongation of the mol-ecule along the approximate twofold rotation axis that bis-ects the ring between the two I atoms. In the extended structure, the mol-ecules form inversion-related pairs which are organized in approximately hexa-gonal close-packed layers and the layers then stacked so that mol-ecules in neighboring layers abut head-to-tail in a manner that optimizes dipole-dipole inter-actions.

SUBMITTER: Hathaway BA 

PROVIDER: S-EPMC2969782 | biostudies-literature | 2009 May

REPOSITORIES: biostudies-literature

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1,2-Diiodo-4,5-dimethyl-benzene.

Hathaway Bruce A BA   Kilgore Uriah J UJ   Bond Marcus R MR  

Acta crystallographica. Section E, Structure reports online 20090507 Pt 6

The structure of the title compound, C(8)H(8)I(2), conforms closely to the mm2 symmetry expected for the free mol-ecule and is the first reported structure of a diiodo-dimethyl-benzene. Repulsion by neighboring I atoms and the neighboring methyl groups opposite to them results in a slight elongation of the mol-ecule along the approximate twofold rotation axis that bis-ects the ring between the two I atoms. In the extended structure, the mol-ecules form inversion-related pairs which are organized  ...[more]