Solution and solid-phase halogen and C–H hydrogen bonding to perrhenate†
Abstract
1H NMR spectroscopic and X-ray crystallographic investigations of a 1,3-bis(4-ethynyl-3-iodopyridinium)benzene scaffold with perrhenate reveal strong halogen bonding in solution, and bidentate association in the solid state. A nearly isostructural host molecule demonstrates significant C–H hydrogen bonding to perrhenate in the same phases.