Research on differences between 2-(2′-pyridyl)benzimidazole and 2-(4′-pyridyl)benzimidazole based on terahertz time-domain spectroscopy

Add time:08/27/2019    Source:sciencedirect.com

Due to the important pharmaceutical activities of benzimidazole derivatives, the differences between 2-(2′-pyridyl)benzimidazole and 2-(4′-pyridyl)benzimidazole were researched by terahertz time-domain spectroscopy and density functional theory systematically. Although the only difference between their molecular configurations is the different arrangement of nitrogen on pyridine ring, 2PBI and 4PBI have large differences in their experimental absorption spectra in the range of 0.2–2.5 THz, such as the amount, amplitude and frequency position of absorption peaks. The validity of these results was confirmed by the theoretical results simulated using density functional theory. The possible reasons of these differences originate from the different dihedral angles between benzimidazole ring and pyridine ring and the different hydrogen-bonding interactions within crystal cell.

We also recommend Trading Suppliers and Manufacturers of 4'-(4-Pyridyl)-4,2':6',4''-terpyridine (cas 113919-79-2). Pls Click Website Link as below: cas 113919-79-2 suppliers

Prev:Evolution of electronic and vibronic transitions in metal(II) meso-tetra(4-pyridyl)porphyrins
Next:Structural versatility driven by the flexible di(4-pyridyl) sulfide ligand: From cobalt(II) single-ion magnets to sheet-like copper(II) weak antiferromagnets☆)