The degree of aromaticity of mono-substituted derivatives of benzene has beeninvestigated using a new index based on electric field gradient index, by using two mechanicalquantum methods with Gaussian 03. Two different basis sets have applied to study and theresults compared. This strategy has demonstrated that, due to violation of symmetry in have pisystems,how the degree of aromaticity can ha...

The complexes formed between three molecules where the diboryl units (HBH2BH) replace C2H2 moiety in benzene (B6H12, C2B4H10, and C4B2H8) 10 anions (H−, F−, Cl−, Br−, OH−, CCH−, CH3−, CN−, N3−, CNO−) have been studied using MP2 computational methods with complete basis set (CBS) extrapolation scheme. stability of for a given anion increases number diborane molecules, these energy values are cor...

Dicoumarols and coumarin derivatives have shown a variety of pharmaceutical activities and have been found to be potent inhibitor for the NAD(P)H-dependent flavoproteins. In this report, dicoumarol and its derivatives containing the substituted benzene ring at the methylenebis position were synthesized and evaluated for their antibacterial activity against gram-positive bacteria: Staphylococcus...

Schiff bases of Benzene sulfonyl hydrazide (SBSZ) (1a-e) were prepared by using various benzaldehyde derivatives. SBSZ then condensed with mercapto acetic acid. The obtained resultant 2-thiazolidinone derivatives (2a-e) 5-nitro-2furfuralidine i.e. (Z)-N-(5-((5-nitrofuran-2-yl) methylene)-4-oxo-2-substitutedthiazolidin-3-yl) benzenesulfonamide (3a-e). These further phenyl urea to yield fused het...

The quantitative and qualitative composition of the light pyrolysis resin was preliminarily studied on an Agilent Technologies 7820A gas chromatograph, amount benzene its mono-, di-, trialkyl derivatives determined. By catalytic thermal treatment, mass fraction in increased from 37.94 to 47.38%. benzene-toluene separated by rectification presence petroleum-polymer residue investigated. Unlike t...