Hydrogen-bond coordination in organic crystal structures: statistics, predictions and applications

Acta Crystallogr B Struct Sci Cryst Eng Mater. 2014 Feb;70(Pt 1):91-105. doi: 10.1107/S2052520613033003. Epub 2014 Jan 16.

Abstract

Statistical models to predict the number of hydrogen bonds that might be formed by any donor or acceptor atom in a crystal structure have been derived using organic structures in the Cambridge Structural Database. This hydrogen-bond coordination behaviour has been uniquely defined for more than 70 unique atom types, and has led to the development of a methodology to construct hypothetical hydrogen-bond arrangements. Comparing the constructed hydrogen-bond arrangements with known crystal structures shows promise in the assessment of structural stability, and some initial examples of industrially relevant polymorphs, co-crystals and hydrates are described.

Keywords: co-crystals; hydrogen bonding; polymorphism; solvates.