0000000000059718
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Methyl 3′,4′,5′-trimethoxybiphenyl-4-carboxylate
In the title compound, C17H18O5, the dihedral angle between the benzene rings is 31.23 (16)°. In the crystal, the molecules are packed in an antiparallel fashion in layers along the a axis. In each layer, very weak C—H...O hydrogen bonds occur between the methoxy and methyl ester groups. Weak C—H...π interactions between the 4′- and 5′-methoxy groups and neighbouring benzene rings [methoxy-C–ring centroid distances = 4.075 and 3.486 Å, respectively] connect the layers.
Methyl 3′,5′-dimethoxybiphenyl-4-carboxylate
In the title compound, C16H16O4, the dihedral angle between the benzene rings is 28.9 (2)°. In the crystal, molecules are packed in layers parallel to the b axis in which they are connected via weak intermolecular C—H...O contacts. Face-to-face π–π interactions also exist between the benzene rings of adjacent molecules, with centroid–centroid and plane-to-plane shift distances of 3.8597 (14) and 1.843 (2) Å, respectively.
3,5-Dimethoxy-4′-methylbiphenyl
The title compound, C15H16O2, crystallizes with three independent molecules in the asymmetric unit. The intramolecular torsion angle between the aromatic rings of each molecule are −36.4 (3), 41.3 (3) and −37.8 (3)°. In the crystal, the complicated packing of the molecules forms wave-like layers along the b and c axes. The molecules are connected via extensive methoxy–phenyl C—H...π interactions. A weak C—H...O hydrogen-bonding network also exists between methoxy O atoms and aromatic or methoxy H atoms.