Journal
SYMMETRY-BASEL
Volume 13, Issue 12, Pages -Publisher
MDPI
DOI: 10.3390/sym13122350
Keywords
nitriles; noncovalent interactions; chalcogen heterocycles; chalcogen bonding; tellurium
Categories
Funding
- RUDN University Strategic Academic Leadership Program
- Russian Foundation for Basic Research [20-53-00006]
- Belarusian Foundation for Fundamental Research [X20P-066]
Ask authors/readers for more resources
The synthesis of 2-pyridyltellurenyl bromide via Br-2 oxidative cleavage of the Te-Te bond of dipyridylditelluride is reported, and the single-crystal X-ray diffraction analysis revealed its molecular and supramolecular structures. In contrast to the selenium congener, the tellurium congener does not react with nitriles but easily forms adducts.
The synthesis of 2-pyridyltellurenyl bromide via Br-2 oxidative cleavage of the Te-Te bond of dipyridylditelluride is reported. Single-crystal X-ray diffraction analysis of 2-pyridyltellurenyl bromide demonstrated that the Te atom of 2-pyridyltellurenyl bromide was involved in four different noncovalent contacts: TeMIDLINE HORIZONTAL ELLIPSISTe interactions, two TeMIDLINE HORIZONTAL ELLIPSISBr ChB, and one TeMIDLINE HORIZONTAL ELLIPSISN ChB contact forming 3D supramolecular symmetrical framework. In contrast to 2-pyridylselenenyl halides, the Te congener does not react with nitriles furnishing cyclization products. 2-Pyridylselenenyl chloride was demonstrated to easily form the corresponding adduct with benzonitrile. The cyclization product was studied by the single-crystal X-ray diffraction analysis, which revealed that in contrast to earlier studied cationic 1,2,4-selenadiazoles, here we observed that the adduct with benzonitrile formed supramolecular dimers via SeMIDLINE HORIZONTAL ELLIPSISSe interactions in the solid state, which were never observed before for 1,2,4-selenadiazoles.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available