Halogen bonding two-point recognition with terphenyl derivatives

Abstract

Two-point recognition involving neutral terphenyl-based halogen bond donors (halogen-based Lewis acids) was investigated. Oxadiazole and pyridazole derivatives were identified by DFT as suitable binding partners, even though gas-phase binding was weak. X-ray studies provided convincing evidence of two-point binding in the solid state, while solution data hinted at weak association.