Thiophenic compounds constitute a class of sulfur derived by thiophene, containing at least one thiophenic ring. Their presence in fuels (crude oil, etc.) is important and can reach 3% m/m. The combustion leads to the formation oxides severe source environmental pollution issues, such as acid rain with adverse effects both humans environment. To reduce problems, EU other regulatory agencies wor...

The reaction between [V(IV)OSO(4)] and the tetradentate N(2)O(2)-donor Schiff base ligand, N,N-bis(o-hydroxybenzaldehyde)phenylenediamine (sal-HBPD), obtained by the condensation of salicylaldehyde and o-phenylenediamine in a molar ratio of 2 : 1 respectively, resulted in the formation of [V(IV)O(sal-HBPD)]. The molecular structure of [V(IV)O(sal-HBPD)] was determined by single crystal X-ray di...

microbiological analyses of soil chronically exposed to petroleum complex compounds of some oil springs in south of iran resulted in isolation and purification of a new native thermophilic strain which is capable to desulfurize petroleum sulfur compounds by 4-s mechanism. dibenzothiophene (dbt) was selected as a complex sulfur compound model and many experiments were done to identify the metabo...

(0.70 mmol) of dibenzothiophene was added. After 48 h at 55 OC the mixture was worked up, first with glacial acetic acid and then with 6 N aqueous HCI. A sample of the biphenyl (95%) was analyzed by MS and IR measurements. The product was a mixture of 14.3% 2,2'-dideuterio-and 25.3% 2-deuteriobiphenyl, together with 60.4% biphenyl. (e) Workup with o-Deuterioacetic Acid. The reaction between (CO...