The Carbonyl⋅⋅⋅Tellurazole Chalcogen Bond as a Molecular Recognition Unit: From Model Studies to Supramolecular Organic Frameworks.

摘要: In the last years, chalcogen bonding, noncovalent interaction involving centers, has emerged as interesting alternative to ubiquitous hydrogen bonding in many research areas. Here, we could show by means of high-level quantum chemical calculations that carbonyl⋅⋅⋅tellurazole bond is at least strong conventional bonds. Using binding motif, were able design complex supramolecular networks solid phase starting from tellurazole-substituted cyclic peptides. X-ray analyses reveal rigid structure peptides caused bonds, whereas network held together bonding. The type depends on peptide used; both linear wires and a honeycomb-like organic framework (SOF) observed. unique SOF shows two channels filled with different types solvent mixtures are either locked or freely movable.