Crystallography of Modular Materials : Oxford University Press : 9780199545698 : 0199545693 : 08 May 2008 : This is the first book to provide a comprehensive treatment of theories and applications in the rapidly expanding field of the crystallography of modular materials. Molecules are the natural modules from which molecular crystalline stuctures are built. Most inorganic structures, however, are infinite arrays of atoms and some kinds of surrogate modules, e.g. coordination polyhedra, are usually used to describe them. In recent years the attention has been focused on complex modules as the basis for a systematic description of polytypes and homologous/polysomatic series (modular structures). This representation is applied to the modelling of unknown structures and understanding nanoscale defects and intergrowths in materials. The Order/Disorder (OD) theory is fundamental to developing a systematic theory of polytypism, dealing with those structures based on both ordered and disorder