Involving metals in halogen–halogen interactions: second-sphere Lewis acid ligands for perhalometallate ions (M–X⋯X′–C)

Abstract

Lewis-acidic halocarbon groups (X–C) serve as effective second-sphere ligands for perhalometallate ions and provide an alternative means to hydrogen bonds for developing the supramolecular chemistry of such ions, exemplified here by short directional M–X⋯X′–C halogen bond linkages used in conjunction with hydrogen bonds for crystal synthesis.