Crystal structure of 4'-bromo-2,5-dihy-droxy-2',5'-dimeth-oxy-[1,1'-biphen-yl]-3,4-dicarbo-nitrile.
In the crystal of the title substituted hemibi-quinone derivative, C16H11BrN2O4 or [BrHBQH2(CN)2], the substituted benzene rings are rotated about the central C-C bond, forming a dihedral angle of 53.59 (7)°. The ring systems inter-act through an intra-molecular O-H⋯Ometh-oxy hydrogen bond, which induces a geometry quite different from those in previously reported hemibi-quinone structures. In the crystal, the mol-ecules associate through an inter-molecular O-H⋯Nnitrile hydrogen bond, forming chains which extend along [100] and are inter-linked through very weak C-H⋯N hydrogen bonds, giving a overall two-dimensional structure lying parallel to (010).
Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, AL 35487-0336, USA.
Joseph E
JE
Meany
Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, AL 35487-0336, USA.
Steven P
SP
Kelley
Department of Chemistry, McGill University, 801 Sherbrooke St. West, Montreal, Quebec, H3A 0B8, Canada.
Robin D
RD
Rogers
Department of Chemistry, The University of Alabama, Box 870336, Tuscaloosa, AL 35487-0336, USA.
Stephen A
SA
Woski
crystal structure; hemibi­quinone; mol­ecular rectifier