Tue, 21 Nov 2017

Theoretical Study of (5z ,5ˉz) - 2,2- - methylene bis (3-(5-mercapto-1,3,4 Thiadazole-2-yal)-2-(methyl-2,3-dihydro-1,3-oxazepine-4,7-dione) by IR and 1H-NMR Parameters

Saad A Hassan

Corrosion and Theoretical Research Lab, Department of Chemistry, Faculty of Education for Girls, University of Kufa, Iraq.


ABSTRACT

Geometry optimization calculations for (5z,5ˉz)-2,2ˉ- methylene bis (3-(5-mercapto-1,3,4-Thiadazole-2-yal)-2-(methyl -2,3-dihydro-1,3-oxazepine-4,7-dione), B, is carried out to establish a direct correspondence between experimental and theoretical by using density functional theory (DFT) with B3LYP/6-31G. The theoretical IR and 1H-NMR for the same molecule are performed at the same level of theory. These data suggest that the spectra of the thiadazole are consistent with the thiadazole architecture proposed by Abbas and co-workers. The investigation of HOMO and LUMO approved that this molecule is very suitable to be a semiconductor material because it's have a very low energy band gap equal to 0.13628 ev.

Keyword: Density Functional Theory Calculations, Thiadazole-derivative, computational chemistry, Theoretical IR, 1H-NMR spectrum , B3LYP functional

 


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