Journal of the Chinese Chemical Society p. 974 - 983 (2015)
Update date:2022-08-04
Topics:
Murugavel
Madhanraj
Prasanna Kumar, D. K. Andrew
Nagarajan, Sangaraiah
Ponnuswamy, Alagusundaram
The title compound (1), 4-(1-benzyl-5-methyl-1H-1,2,3-triazol-4-yl)-6-(2,4-dichlorophenyl)pyrimidin-2-amine (C20H16Cl2N6), was synthesized and structurally characterized by elemental analysis, 1H NMR and 13C NMR and single crystal X-ray diffraction. The compound crystallizes as a colourless needle shaped in the triclinic system, space group P-1 with cell constants: a = 10.7557(11) ?, b = 12.7078(17) ?, c = 15.511(2) ?, α = 68.029(4)0, β = 86.637(5)0, γ = 87.869(4)0; V = 1962.4 (4) ?3, Z = 4. There are two structurally similar but crystallographically independent molecules (A and B) in the asymmetric unit of the title compound, which is linked via N-H...Cl hydrogen bond. An intramolecular C-H...N hydrogen also occurs in each molecule. In the crystal, each of independent molecules forms a centrosymmetric dimer with an R22(8) ring motifs through a pair of N-H...N hydrogen bonds. These dimers are further connected by intermolecular N-H...Cl and C-H...Cl hydrogen bonds, forming an infinite two dimensional supramolecular network lying parallel to the [010] plane. The molecular geometry was also optimized using density functional theory (DFT/B3LYP) method with the 6-311G (d, p) basis set and compared with the experimental data. Mulliken population analyses on atomic charges, HOMO-LUMO energy levels, Molecular electrostatic potential and chemical reactivity of the title compound were investigated by theoretical calculations. The thermo dynamical properties of the title compound at different temperature have been calculated and corresponding relations between the properties and temperature have also been obtained. The in vitro antibacterial activity has been screened against Gram-positive (Bacillus cerus and Staphylococcus epidermidis) and Gram-Negative (Escherichia coli, Acinetobacter baumannii and Proteus vulgaris). The results revealed that the compound exhibited good to moderate antibacterial activity.
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