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Published on: February 15, 2016
Synthesis, spectroscopic characterization and X-ray structure of [1,2a]benzimidazol-2-yl amidine
A Hajri1, W Smirani, R Abderrahim
1Laboratory of Physics of Lamellaires Materials and Hybrids Nanomaterials, University of Carthage, Faculty of Science of Bizerte, Zarzouna 7021, Bizerte, Tunisia.
Abstract:
[1,2a]Benzimidazol-2-yl amidine was synthesized by adding cyclopentanamine to iminoester in ethanol. The structure of amidine 1 was characterized by IR, 1H NMR, 1H-1H NOESY, 13C NMR, DEPT, XHCOR spectra, thermogravimetric analysis (TGA), differential thermal analysis (DTA), differential scanning calorimetry thermograms (DSC), elementary analysis as well as by X-ray diffraction. The single crystals suitable for X-ray measurement were obtained by recrystallization at room temperature. The amidine group of a model was found to have Z configuration in the crystal. This compound crystallizes in a P2(1)/n monoclinic unit cell with parameters a=12.679(2) Å, b=8.468(3) Å, c=13.108(2) Å, β=96.538(2)°, V=1398.2 Å3 and Z=4.
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