Crystal structure, raman spectroscopy and dielectric properties of new semiorganic crystals based on 2-methylbenzimidazole

E. V. Balashova, F. B. Svinarev, A. A. Zolotarev, A. A. Levin, P. N. Brunkov, V. Yu Davydov, A. N. Smirnov, A. V. Redkov, G. A. Pankova, B. B. Krichevtsov

Research output

Abstract

New single crystals, based on 2-methylbenzimidazole (MBI), of MBI-phosphite (C16 H24 N4 O7 P2), MBI-phosphate-1 (C16 H24 N4 O9 P2), and MBI-phosphate-2 (C8 H16 N2 O9 P2) were obtained by slow evaporation method from a mixture of alcohol solution of MBI crystals and water solution of phosphorous or phosphoric acids. Crystal structures and chemical compositions were determined by single crystal X-ray diffraction (XRD) analysis and confirmed by XRD of powders and elemental analysis. Raman spectroscopy of new crystals evidences the presence in crystals of MBI-, H3 PO3-, or H3 PO4-and water molecules. Dielectric properties of crystals reveal strong increase and low frequency dispersion of dielectric constant and losses at heating, indicating the appearance of proton conductivity. At low temperatures in MBI-phosphate-2, an increase of dielectric constant analogous to quantum paraelectric state is observed.

Original languageEnglish
Article number573
JournalCrystals
Volume9
Issue number11
DOIs
Publication statusPublished - Nov 2019

    Fingerprint

Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

Cite this

Balashova, E. V., Svinarev, F. B., Zolotarev, A. A., Levin, A. A., Brunkov, P. N., Davydov, V. Y., ... Krichevtsov, B. B. (2019). Crystal structure, raman spectroscopy and dielectric properties of new semiorganic crystals based on 2-methylbenzimidazole. Crystals, 9(11), [573]. https://doi.org/10.3390/cryst9110573