scholarly journals Probing the Structural Evolution of the Hydrated Electron in Water Cluster Anions (H2O)n–, n ≤ 200, by Electronic Absorption Spectroscopy

2019 ◽  
Vol 141 (45) ◽  
pp. 18000-18003 ◽  
Author(s):  
Andreas Herburger ◽  
Erik Barwa ◽  
Milan Ončák ◽  
Jakob Heller ◽  
Christian van der Linde ◽  
...  
Keyword(s):  
Absorption Spectroscopy ◽  
Electronic Absorption ◽  
Water Cluster ◽  
Structural Evolution ◽  
Hydrated Electron ◽  
Electronic Absorption Spectroscopy ◽  
Cluster Anions

scholarly journals Benzazole derivatives, IV: Reaction of 1,2,3-trimethylbenzimidazolium salts with aromatic aldehydes

2005 ◽  
Vol 70 (12) ◽  
pp. 1381-1388 ◽  
Author(s):  
Cernatescu Corina ◽  
Comanita Eugenia
Keyword(s):  
Ir Spectroscopy ◽  
Benzene Ring ◽  
Absorption Spectroscopy ◽  
Electronic Absorption ◽  
Aromatic Aldehydes ◽  
Electronic Absorption Spectroscopy ◽  
Methyl Group ◽  
Practical Applications ◽  
Hemicyanine Dyes

1,2,3-Trimethylbenzimidazolium iodide and its analogue salts with one or two substituents on benzene ring (X=NO2,Br,Cl,CH3) are, due to the reactivity of the 2-methyl group, able to react with para-substituted aromatic aldehydes (X=OH,OCH3,CH3,NMe2,NO2) using piperidine as a catalyst. 1-Methyl-2-styrylbenzimidazole iodomethylates were obtained and their structure elucidated by means of NMR and IR spectroscopy. The compounds are interesting as hemicyanine dyes. They lend themselves to studies based on electronic absorption spectroscopy and they have potential practical applications linked to their photosensitive properties.

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