title: C-H.O interactions in diethyl 5,5',6,6'-tetramethylbiphenyl-2, 2'-dicarboxylate at 193 K
abstract: The title compound, C(22)H(26)O(4), crystallized in the centrosymmetric space group P-1 with one molecule as the asymmetric unit. Three leading intermolecular C-H.O interactions have H.O distances of 2.71, 2.73 (2) and 2.71 (2) A and C-H.O angles of 167, 137.0 (15) and 163.1 (12) degrees. These interactions form ring and chain patterns. The biphenyl twist angle is 79.95 (6) degrees.
authors.affiliation: Department of Chemistry, The Ohio State University, Columbus, Ohio 43210, USA. gerkin@chemistry.ohio-state.edu.
authors.initials: RE
authors.lastname: Gerkin