writer：Jing Zhao, Yang-hui Wang, Ming Lou and Bai-wang Sun*
keywords：synthesis, polymorph, different solvent, crystal structure
source：期刊
Issue time：2013年
Two polymorphs of 5-[4’-(bromomethyl)biphenyl-2-yl]-2-trityl-2H-tetrazole can be characterised by single-crystal X-ray diffraction and Hirschfeld surface analysis. Both polymorphs crystallise in the monoclinic space group P21/c, but their cell parameters are different. The interatomic distances of phase A and B are different, and the arrangements of the dipolymers in phase A and B are remarkably different for the molecular orientation and interatomic distances according to their different  π…π  stacking interactions. Additionally, the size and shape of a Hirschfeld surface also reflects the interplay between different atoms and intermolecular contacts in a crystal. From the Hirschfeld surfaces of phase A and B, we can interpret the different proportions of interaction.