European Journal of Chemistry 2018, 9(4), 303-310. doi:10.5155/eurjchem.9.4.303-310.1720

Crystal growth and some physicochemical studies on an organic intermolecular compound of anthranilic acid and N,N-dimethylamino benzaldehyde


Uma Shanker Rai (1,*) orcid , Manjeet Singh (2) orcid , Rama Nand Rai (3) orcid

(1) Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi-221005, India
(2) Crystallography and Crystal Chemistry Laboratory, Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal By-Pass Road, Bhauri, Bhopal-462066, Madhya Pradesh, India
(3) Department of Chemistry, Centre of Advanced Study, Institute of Science, Banaras Hindu University, Varanasi-221005, India
(*) Corresponding Author

Received: 21 Apr 2018, Accepted: 02 Jun 2018, Published: 31 Dec 2018

Abstract


The phase diagram of anthranilic acid and N,N-dimethylaminobenzaldehyde system gives two eutectics (E1 and E2) and a 1:1 intermolecular compound with congruent melting point. The mole fractions of anthranilic acid at E1 and E2 are 0.10 and 0.95, respectively. The negative values of heat of mixing of eutectics suggest that there is clustering of molecules in their eutectic liquid melt. The positive values of excess free energy for eutectics indicate that the interactions between the like molecules are stronger than those of unlike molecules. It can be inferred from single crystal X-ray analysis of the intermolecular compound that it crystallized in monoclinic unit cell with C2/c space group and a reasonably large sized intermolecular compound crystal was grown by slow evaporation technique at room temperature. The optical studies on the intermolecular compound give two strong emission bands with two lmax values one at 380 nm and second at 450 nm with total quantum efficiency 0.49.


Keywords


Emission; Heat of fusion; Phase diagram; Crystal growth; Intermolecular interaction; Single crystal X-ray analysis

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DOI: 10.5155/eurjchem.9.4.303-310.1720

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How to cite


Rai, U.; Singh, M.; Rai, R. Eur. J. Chem. 2018, 9(4), 303-310. doi:10.5155/eurjchem.9.4.303-310.1720
Rai, U.; Singh, M.; Rai, R. Crystal growth and some physicochemical studies on an organic intermolecular compound of anthranilic acid and N,N-dimethylamino benzaldehyde. Eur. J. Chem. 2018, 9(4), 303-310. doi:10.5155/eurjchem.9.4.303-310.1720
Rai, U., Singh, M., & Rai, R. (2018). Crystal growth and some physicochemical studies on an organic intermolecular compound of anthranilic acid and N,N-dimethylamino benzaldehyde. European Journal of Chemistry, 9(4), 303-310. doi:10.5155/eurjchem.9.4.303-310.1720
Rai, Uma, Manjeet Singh, & Rama Nand Rai. "Crystal growth and some physicochemical studies on an organic intermolecular compound of anthranilic acid and N,N-dimethylamino benzaldehyde." European Journal of Chemistry [Online], 9.4 (2018): 303-310. Web. 18 Jan. 2019
Rai, Uma, Singh, Manjeet, AND Rai, Rama. "Crystal growth and some physicochemical studies on an organic intermolecular compound of anthranilic acid and N,N-dimethylamino benzaldehyde" European Journal of Chemistry [Online], Volume 9 Number 4 (31 December 2018)

DOI Link: https://doi.org/10.5155/eurjchem.9.4.303-310.1720

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