Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Picolinoyl chloride hydrochloride, is researched, Molecular C6H5Cl2NO, CAS is 39901-94-5, about Supramolecular wiring of benzo-1,3-chalcogenazoles through programmed chalcogen bonding interactions.Application of 39901-94-5.
The high-yielding synthesis of 2-substituted benzo-1,3-tellurazoles and benzo-1,3-selenazoles through a dehydrative cyclization reaction has been reported, giving access to a large variety of benzo-1,3-chalcogenazoles. Exceptionally, these aromatic heterocycles proved to be very stable and thus very handy to form controlled solid-state organizations in which wire-like polymeric structures are formed through secondary N…Y bonding interactions (SBIs) engaging the chalcogen (Y = Se or Te) and nitrogen atoms. In particular, it has been shown that the recognition properties of the chalcogen center at the solid state could be programmed by selectively barring one of its σ-holes through a combination of electronic and steric effects exerted by the substituent at the 2-position. As predicted by the electrostatic potential surfaces calculated by quantum chem. modeling, the pyridyl groups revealed to be the stronger chalcogen bonding acceptors, and thus the best ligand candidate for programming the mol. organization at the solid state. In contrast, the thiophenyl group is an unsuitable substituent for establishing SBIs in this mol. system as it gives rise to chalcogen-chalcogen repulsion. The weaker chalcogen donor properties of the Se analogs trigger the formation of feeble N…Se contacts, which are manifested in similar solid-state polymers featuring longer nitrogen-chalcogen distances.
《Supramolecular wiring of benzo-1,3-chalcogenazoles through programmed chalcogen bonding interactions》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(Picolinoyl chloride hydrochloride)Application of 39901-94-5.