Halide binding and self-assembling behavior of Triazole-based acyclic and cyclic molecules

The present study demonstrates the use of triazole moiety in designing molecules endowed with the ability for self-assembly and molecular recognition. The receptors 7a and 9a having open structures bind to fluoride ion with good affinity. Various cyclophanes with 19-, 20-, 21-, 38-, and 40-membered rings containing triazole units were designed and synthesized. X-ray crystal structure of macrocycle 16 showed a tubular like architecture. Triazolophane 22 possesses bifurcated CH?N intramolecular hydrogen bonds and it further organizes in the solid state using CH?N interactions. Triazole based compounds are potential store house for exploiting CH?O and CH?N hydrogen bonding interactions for molecular self-assembly.