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Asian Journal of Applied Sciences
Year: 2017  |  Volume: 10  |  Issue: 4  |  Page No.: 170 - 178

Spectral and Antimicrobial Activity Studies on 4-Carboxyanilinium Nitrate Crystal

Chandran Muthuselvi, Murugesan Pandeeswari and Sankara Sabapathy Pandiarajan    

Abstract: Objective: The main objective of the present work was to grow 4-carboxyanilinium nitrate C7H8NO2+. NO3‾ semi-organic crystal by slow evaporation method and analyzed by various techniques. The positively charged carboxyanilinium cation and nitrate anion were existing in this crystal structure. Materials and Methods: 4-aminobenzoic acid, nitric acid, ethanol and deionized water were used in the crystal growth process as the raw materials. The semi-organic crystal of 4-carboxyanilinium nitrate is crystallized from the aqueous ethanol solution of 4-aminobenzoic acid mixed with aqueous solution of nitric acid in 2:1 stoichiometric ratio by slow evaporation technique. Results: The crystal lattice parameters and space group was obtained from the single crystal XRD study. The powder X-ray diffraction peaks were indexed using the INDX software. The FTIR and FT-Raman spectra of 4-carboxyanilinium nitrate crystal had been recorded at room temperature. The spectra were interpreted in terms of the wavenumber assignments. The SEM analysis shows that the complex crystal has smooth surface and well defined shape morphology. The optical band gap was determined from the UV-Visible spectroscopy analysis. Conclusion: The unit cell parameters and space group were estimated by single crystal X-ray diffraction technique. The average crystalline size of grown crystal is found to be as 72 nm. Further, the presence of functional groups and elements were verified using FTIR and FT-Raman spectroscopy and energy dispersive X-ray studies. Also, the optical band gap of title crystal is determined as 3.90 eV. The grown crystals were involved in an antibacterial activity against certain potentially threatening microbes which shows that the complex crystal screened the bacteria than that of the parent crystal.

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