The broad field of conformational motion disorder in crystals is
described with particular attention to the separation from the well
known mesophases of liquid crystals and plastic crystals. Structure,
thermodynamics and motion of a larger number of small and large
molecules are discussed. Of special interest are the borderlines between
smectic and high viscosity liquid crystals and condis crystals and
between plastic crystals and condis crystals as complicated by
pseudorotation, jumping between symmetry-related states and hindered
rotation. This paper illustrates the wide distribution of conformational
disorder in nature. Condis crystals and glasses (Conformational
Disorder) can be found in small and large molecule systems made of
organic, inorganic and biological compounds. The condis state was newly
discovered only four years ago. In this article over 100 examples are
discussed as example of the condis state. In many cases the condis state
was suggested for the first time. Motion in the Condensed State, Condis
Crystals and their Relation to Plastic Crystals, Condis Crystals of
Flexible Macromolecules, Condis Crystals and their Relation to Liquid
Crystals, Condis Crystals of Stiff Macromolecules.