Synthesis and Crystal Structures of Halogen-Substituted 2-Aryl- N -phenylbenzimidazoles.

Autor:	Koptyaeva, Anastasia G., Zakharov, Alexander Y., Kiseleva, Marina A., Mariasina, Sofia S., Kalle, Paulina, Churakov, Andrei V., Bezzubov, Stanislav I.
Předmět:	CRYSTAL structure ULTRAVIOLET-visible spectroscopy X-ray diffraction X-ray crystallography BENZIMIDAZOLES X-ray spectroscopy
Zdroj:	Molbank; Dec2022, Vol. 2022 Issue 4, pM1498, 7p
Abstrakt:	Four 2-arylbenzimidazoles (aryl = 4-Br-phenyl (1), 3-Br-phenyl (2), 4-I-phenyl (3), 3-I-phenyl (4)) were synthesized and characterized by 1H, 13C{1H} NMR, UV–Vis spectroscopy and single-crystal X-ray diffraction. Both pairs of benzimidazoles bearing the halogen atom at the same position form isostructural crystals, in which para-substituted compounds 1 and 3 are assembled by weak C–H···π and π···π interactions while their meta-isomers 2 and 4 are linked via intermolecular halogen···nitrogen and C–H···π contacts. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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