title: 1-Iodo-triptycene.
abstract: The title compound, C(20)H(13)I, is a halogenated derivative of triptycene. The mol-ecule shows crystallographic as well as non-crystallographic C(3) symmetry. The asymmetric unit comprises one third of the mol-ecule. Dispersive I⋯I contacts [I⋯I = 3.6389 (3) Å] connect the mol-ecules into dimers. The shortest centroid-centroid distance between two π-systems is 3.8403 (12) Å.
authors: Nelson Mandela Metropolitan University, Summerstrand Campus, Department of Chemistry, University Way, Summerstrand, PO Box 77000, Port Elizabeth, 6031,  South Africa.
authors: Richard
authors: R
authors: Betz
authors: Cedric
authors: C
authors: McCleland
authors: André
authors: A
authors: Scheffer