European Journal of Chemistry 2021, 12(2), 133-146 | doi: | Get rights and content

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Synthesis, spectral, crystallographic, and computational investigation of a novel molecular hybrid 3-(1-((benzoyloxy)imino)ethyl)-2H-chromen-2-ones

Kannan Gokula Krishnan (1) orcid , Venugopal Thanikachalam (2,*) orcid

(1) Department of Chemistry, Government Arts and Science College for Women, Karimangalam - 635 111, Tamil Nadu, India
(2) Department of Chemistry, Annamalai University, Annamalainagar - 608 002, Tamil Nadu, India
(*) Corresponding Author

Received: 21 Jan 2021 | Revised: 28 Feb 2021 | Accepted: 07 Mar 2021 | Published: 30 Jun 2021 | Issue Date: June 2021


Synthesis of 3-(1-((benzoyloxy)imino)ethyl)-2H-chromen-2-ones (1-5) was accomplished and it was characterized experimentally using various analytical techniques. Computational studies have been carried out for all compounds 1-5 using B3LYP method with 6-311++G(d,p) basis set. The optimized structural features viz. bond lengths, bond angles, and dihedral angles are compared with their single-crystal X-ray diffraction results of compound 1 (Crystal data for C18H13NO4 (M = 307.29 g/mol): Monoclinic, space group P21/c (no. 14), a = 11.399(5) Å, b = 5.876(5) Å, c = 21.859(5) Å, β = 91.060(5)°, V = 1463.9(14) Å3, Z = 4, T = 293(2) K, μ(MoKα) = 0.100 mm-1, Dcalc = 1.394 g/cm3, 13555 reflections measured (3.58° ≤ 2Θ ≤ 56.98°), 3669 unique (Rint = 0.0235) which were used in all calculations. The final R1 was 0.0444 (>2sigma(I)) and wR2 was 0.1506 (all data)), which are in good conformity with each other. Normal modes of vibrational frequencies of compounds 1-5 acquired from density-functional theory (DFT) method coincided with the experimental ones. The 1H and 13C chemical shifts of compounds 1-5 have been calculated by GIAO method and the results have been compared with the experimental ones. The first-order hyperpolarizability and their related properties of the novel molecules 1-5 are calculated computationally. The other parameters like natural bond orbital, zero-point vibrational energy, EHOMO, ELUMO, heat capacity and entropy have also been discussed.


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European Journal of Chemistry


NMR; Oxime esters; NBO analysis; Single crystal XRD; Vibrational frequencies; Computational chemistry

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DOI: 10.5155/eurjchem.12.2.133-146.2073

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How to cite

Krishnan, K.; Thanikachalam, V. Eur. J. Chem. 2021, 12(2), 133-146. doi:10.5155/eurjchem.12.2.133-146.2073
Krishnan, K.; Thanikachalam, V. Synthesis, spectral, crystallographic, and computational investigation of a novel molecular hybrid 3-(1-((benzoyloxy)imino)ethyl)-2H-chromen-2-ones. Eur. J. Chem. 2021, 12(2), 133-146. doi:10.5155/eurjchem.12.2.133-146.2073
Krishnan, K., & Thanikachalam, V. (2021). Synthesis, spectral, crystallographic, and computational investigation of a novel molecular hybrid 3-(1-((benzoyloxy)imino)ethyl)-2H-chromen-2-ones. European Journal of Chemistry, 12(2), 133-146. doi:10.5155/eurjchem.12.2.133-146.2073
Krishnan, Kannan, & Venugopal Thanikachalam. "Synthesis, spectral, crystallographic, and computational investigation of a novel molecular hybrid 3-(1-((benzoyloxy)imino)ethyl)-2H-chromen-2-ones." European Journal of Chemistry [Online], 12.2 (2021): 133-146. Web. 3 Jun. 2023
Krishnan, Kannan, AND Thanikachalam, Venugopal. "Synthesis, spectral, crystallographic, and computational investigation of a novel molecular hybrid 3-(1-((benzoyloxy)imino)ethyl)-2H-chromen-2-ones" European Journal of Chemistry [Online], Volume 12 Number 2 (30 June 2021)

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