title: Hydrogen bonding and C-H...O interactions in 2,2'-dihydroxy-5,5'-dimethoxybiphenyl-3,3'-dicarbaldehyde.
abstract: The title dialdehyde, C16H14O6, crystallized in the centrosymmetric space group P1 with one molecule in the asymmetric unit. In this structure, one intermolecular and two intramolecular hydrogen bonds occur; the OD...OA distances are 3.030(2), 2.626(2) and 2.662(2) A. In addition, ten significant C-H...O interactions have C...O distances ranging from 3.342(2) to 3.741(3) A and C-H...O angles ranging from 117 to 167 degrees. The 11 intermolecular interactions link a molecule directly to eight neighbors and form a richly three-dimensional network. The dihedral angle between the best-fit planes of the benzene rings within a molecule (biphenyl twist angle) is 79.00(8) degrees. The dihedral angles between the carboxaldehyde-group planes and the best-fit planes of the rings to which they are attached are 4.7(10) and 2.6(10) degrees.
authors.affiliation: Department of Chemistry, Ohio State University, Columbus 43210, USA. gerkin@chemistry.ohio-state.edu
authors.forename: R E
authors.initials: RE
authors.lastname: Gerkin
mesh_terms: D001547:Benzaldehydes / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003460:Crystallization; D018360:Crystallography, X-Ray; D006139:Guaiacol / Q000031:analogs & derivatives* / Q000737:chemistry; D006860:Hydrogen Bonding; D015394:Molecular Structure; D010100:Oxygen / Q000737:chemistry
chemical_list: C121087:2,2'-dihydroxy-5,5'-dimethoxybiphenyl-3,3'-dicarbaldehyde; D001547:Benzaldehydes; D006139:Guaiacol; D002244:Carbon; D010100:Oxygen