Crystal structures of 3,4,5-tri-phenyl-toluene and 3,4,5-tri-phenyl-benzyl bromide.

This article describes the crystal structures of 3,4,5-tri-phenyl-toluene, CH (), and 3,4,5-tri-phenyl-benzyl bromide, CHBr (), which represent two inter-mediates of a multistep synthesis of a phenyl-acetic acid derivative. Compound crystallizes from methanol in two polymorphic forms, with the space groups 2/ () and 2/c (). In both cases, van der Waals forces significantly contribute to the cohesion of the crystal structure and the two polymorphs are characterized by similar modes of mol-ecular inter-connection. Compound crystallizes from -hexane in the space group 1, showing a similar pattern of noncovalent inter-actions to and . In all reported structures, the aromatic framework of the mol-ecules adopts a paddlewheel-like conformation.