Acta Cryst. (2008). E64, o1779  [ doi:10.1107/S1600536808025762 ]

Tetramethyl biphenyl-2,3,3',4'-tetracarboxylate

G. Gao, X. Ma, Y. Jiang, W. Chen and J. Men

Abstract: The asymmetric unit of the title compound, C₂₀H₁₈O₈, contains two molecules with small geometric differences. The dihedral angles between the benzene rings are 62.94 (12) and 59.99 (12)°. The dihedral angles between the carboxylate groups in the 2- and 3-positions are 81.72 (13) and 65.54 (15)°, respectively. However, the dihedral angles between the carboxylate groups in the 3' and 4'-positions are 67.24 (15) and 59.98 (17)°, respectively.

Online 16 August 2008

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