Polymorphism in a two-dimensional copper(i) metal–organic framework with the ligand bis(4-pyridylthio)methane

Abstract

Polymorphism is a common phenomenon in crystalline materials but it has barely been studied in the field of metal organic frameworks. The study of polymorphism is useful to investigate structure–property relationships and control over the synthesis of particular polymorphs could be an effective way to fine-tune the physical properties of materials. We report here the preparation and characterization of three polymorphs of a copper(I) coordination polymer ²_∞CuCl(4bpytm), 4bpytm = bis(4-pyridylthio)methane. The structural and thermal properties of these compounds were studied to obtain a detailed knowledge of the differences between the three polymorphic forms.