Polymorphism in Molecular Crystals

Polymorphism—the multiplicity of structures or forms—is a term that is used in many disciplines. In chemistry it refers to the existence of more than one crystal structure for a particular chemical substance. The properties of a substance are determined by its composition and by its structure. In the last two decades, there has been a sharp rise in the interest in olymorphic systems, as an intrinsically interesting phenomenon, and as an increasingly important component in the development and …