Publications (115) View all
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Article: 1-Phenyl-2-p-tolyl-1H-benzimidazole
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ABSTRACT: In the title compound, C 20 H 16 N 2 , the benzimidazole ring system forms dihedral angles of 28.50 (7) and 72.44 (7) with the tolyl and phenyl rings, respectively. In the crystal, molecules are linked into chains along the a-axis direction by weak C—HÁ Á ÁN interactions. The crystal structure also features C—HÁ Á Á interactions.Acta Crystallographica Section E Structure Reports Online 01/2013; E69:o334. · 0.35 Impact Factor -
Article: 1-Phenyl-2-[4-(trifluoromethyl)phenyl]- 1H-benzimidazole
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ABSTRACT: In the title molecule, C 20 H 13 F 3 N 2 , the benzimidazole unit is close to being planar [maximum deviation = 0.012 (1) Å ] and forms dihedral angles of 31.43 (7) and 61.45 (9) with the 4-(trifluoromethyl)phenyl and 1-phenyl rings, respectively; the dihedral angle between these rings is 60.94 (10) . In the crystal, C—HÁ Á ÁF hydrogen bonds link the molecules into chains along the c-axis direction. The CF 3 group is rotationally disordered with an occupancy ratio of 0.557 (8):0.443 (8) for the F atoms.Acta Crystallographica Section E Structure Reports Online 01/2013; E69:o244. · 0.35 Impact Factor -
Article: 2-(1-Phenyl-1H -benzimidazol-2-yl)phenol
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ABSTRACT: Acta Cryst. (2013). E69, o62 This open-access article is distributed under the terms of the Creative Commons Attribution Licence http://creativecommons.org/licenses/by/2.0/uk/legalcode, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited. Acta Crystallographica Section E: Structure Reports Online is the IUCr's highly popu-lar open-access structural journal. It provides a simple and easily accessible publication mechanism for the growing number of inorganic, metal-organic and organic crystal struc-ture determinations. The electronic submission, validation, refereeing and publication facilities of the journal ensure very rapid and high-quality publication, whilst key indica-tors and validation reports provide measures of structural reliability. The journal publishes over 4000 structures per year. The average publication time is less than one month.Acta Crystallographica Section E Structure Reports Online 01/2013; E69:062. · 0.35 Impact Factor -
Article: Synthesis, spectral studies and solvatochromism of some novel benzimidazole derivatives - ESIPT process.
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ABSTRACT: Some novel benzimidazole derivatives were synthesized and characterized by (1)H, (13)C NMR mass and elemental analysis. XRD analysis was carried out for 1-(4-methylbenzyl)-2-p-tolyl-1H-benzo[d]imidazole. The solvent effect on the absorption and fluorescence bands has been analyzed. The energetic analysis of the potential energy surface (PES), HOMO and LUMO levels [DFT/B3LYP/6-31G(d,p)] evidenced the existence of excited state intramolecular proton transfer (ESIPT) in hydroxy benzimidazole derivative.Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy 12/2012; 105C:223-228. · 2.10 Impact Factor -
Article: Photoinduced electron-transfer from benzimidazole to nanocrystals
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ABSTRACT: The dynamics of photoinduced electron injection and energy transfer from benzimidazole to CuO, Fe 2 O 3 , WO 3 and Al 2 O 3 nanoparticles has been studied by FT-IR, absorption and fluorescence spectroscopic methods. The association between nanoparticles and the benzimidazole derivative was explained from both absorption and fluorescence quenching data [K app = 2.11 × 10 6 M −1 (CuO); 4.11 × 10 6 M −1 (Fe 2 O 3); 2.91 × 10 6 M −1 (WO 3) and 3.85 × 10 6 M −1 (Al 2 O 3)]. There is good agreement between these values of K app obtained from the data of fluorescence quenching with those determined from the absorption spectral changes which highlighted the validity of the association between benzimidazole and nanoparticles. The distance between the benzimidazole derivative and nanoparticles (r 0 ~ 3.12 nm) as well as the critical energy transfer distance (R 0 ~ 1.70 nm) has been calculated. By applying the Rehm–Weller equation, the free energy change (ΔG et) for electron injection has also been calculated.Journal of Molecular Liquids 12/2012; 177:295-300. · 1.58 Impact Factor
