Crystallographic study and molecular orbital calculations of thiadiazole derivatives. 2. 3,4-diphenyl-1,2,5-thiadiazole 1-monoxide

Single-crystal X-ray diffraction studies are reported for 3,4-diphenyl-1,2,5-thiadiazole 1-monoxide (I). Ab initio MO calculations on the electronic structure, conformation and reactivity for this compound are also reported and compared with the X-ray results. A charge sensitivity analysis is perfor...

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Bibliographic Details
Published in:Journal of molecular structure 2002-02, Vol.604 (2), p.195-203
Main Authors: Castellano, E.E., Piro, O.E., Caram, J.A., Mirı́fico, M.V., Aimone, S.L., Vasini, E.J., Márquez-Lucero, A., Glossman-Mitnik, D.
Format: Article
Language:English
Subjects:
1,2,5-Thiadiazole 1-oxide
Ab initio MO calculations
DFT
Sensitivity analysis
Single-crystal X-ray diffraction
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Summary:Single-crystal X-ray diffraction studies are reported for 3,4-diphenyl-1,2,5-thiadiazole 1-monoxide (I). Ab initio MO calculations on the electronic structure, conformation and reactivity for this compound are also reported and compared with the X-ray results. A charge sensitivity analysis is performed on the results applying concepts derived from density functional theory (DFT), obtaining several sensitivity coefficients such as the molecular energy, net atomic charges, global and local hardness, global and local softness and Fukui functions. With these results and the analysis of the dipole moment and the total electron density and electrostatic potential maps, several conclusions have been inferred about the preferred sites of chemical reaction of the compound.
ISSN:0022-2860
1872-8014
DOI:10.1016/S0022-2860(01)00656-1