Structural flexibility of halogen bonds showed in a single-crystal-to-single-crystal [2+2] photodimerization.

ABSTRACT: Halogen bonds have emerged as noncovalent forces that govern the assembly of molecules in organic solids with a degree of reliability akin to hydrogen bonds. Although the structure-directing roles of halogen bonds are often compared to hydrogen bonds, general knowledge concerning the fundamental structural behavior of halogen bonds has had limited opportunity to develop. Following an investigation of solid-state reactions involving organic syntheses and the development of photoresponsive materials, this work demonstrates the ability of the components of intermolecular N⋯I halogen bonding - a 'workhorse' interaction for the crystal engineer - to support a single-crystal-to-single-crystal [2+2] photodimerization. A comparison is provided of the geometric changes experienced by the halogen-bo

SUBMITTER: Sinnwell MA 

PROVIDER: S-EPMC6038960 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature