Thermal expansion properties of three isostructural co-crystals composed of isosteric components: interplay between halogen and hydrogen bondsElectronic supplementary information (ESI) available: Experimental details, single-crystal X-ray data and structures, and PASCal thermal expansion results. CCDC 1059604-1059611. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c6ce01674j

Co-crystallization of a symmetrical azo bipyridine with isosteric resorcinols affords isostructural co-crystals that exhibit linear thermal expansion along each axis. The thermal expansions involve interplay between intra-layer halogen and hydrogen bonds. Co-crystallization of a symmetrical azo bipyridine with isosteric resorcinols affords isostructural co-crystals that exhibit linear thermal expansion along each axis.