نتایج جستجو برای: organo sulfur compounds

تعداد نتایج: 256276  

Journal: :Journal of the American Chemical Society 2010
Joann M Um Osvaldo Gutierrez Franziska Schoenebeck K N Houk David W C MacMillan

The intramolecular alpha-arylation of aldehydes via organo-SOMO catalysis was investigated using density functional theory (B3LYP and M06-2X functionals). The geometries, spin densities, Mulliken charges, and molecular orbitals of the reacting enamine radical cations were analyzed, and the nature of the resulting cyclized radical cation intermediates was characterized. In agreement with experim...

Journal: :iranian journal of basic medical sciences 0
zohreh sattar biotechnology research center, school of pharmacy, mashhad university of medical sciences, mashhad, iran mehrdad iranshahi biotechnology research center, school of pharmacy, mashhad university of medical sciences, mashhad, iran

ferula persica, is the well-known species of the genus ferula in iran and has two varieties: persica and latisecta. they have both been extensively used in traditional medicine for a wide range of ailments. a great number of chemical compounds including sesquiterpene coumarins and polysulfides have been isolated from this plant. fresh plant materials, crude extracts and isolated components of f...

Journal: :Inorganic chemistry 2007
Hakim Boukhalfa Sean D Reilly Mary P Neu

The bioavailability and mobility of Pu species can be profoundly affected by siderophores and other oxygen-rich organic ligands. Pu(IV)(siderophore) complexes are generally soluble and may constitute with other soluble organo-Pu(IV) complexes the main fraction of soluble Pu(IV) in the environment. In order to understand the impact of siderophores on the behavior of Pu species, it is important t...

Journal: :Journal of bacteriology 1955
T SHIOTA F M CLARK

The sulfur nutrition of microorganisms has been studied by many investigators. Early workers were interested essentially in sulfur compounds used by organisms as sulfur sources. Recent efforts have been directed toward the determination of mechanisms involved in the utilization of sulfur compounds. Results of investigations by Horowitz (1947), Lampen et al. (1947), Teas et al. (1948), Binkley a...

Journal: :Journal of bacteriology 1996
K B Hallberg M Dopson E B Lindström

The oxidation of reduced inorganic sulfur compounds was studied by using resting cells of the moderate thermophile Thiobacillus caldus strain KU. The oxygen consumption rate and total oxygen consumed were determined for the reduced sulfur compounds thiosulfate, tetrathionate, sulfur, sulfide, and sulfite in the absence and in the presence of inhibitors and uncouplers. The uncouplers 2,4-dinitro...

Journal: :Applied and environmental microbiology 1999
M J Grossman M K Lee R C Prince K K Garrett G N George I J Pickering

Rhodococcus sp. strain ECRD-1 was evaluated for its ability to desulfurize a 232 to 343 degrees C middle-distillate (diesel range) fraction of Oregon basin (OB) crude oil. OB oil was provided as the sole source of sulfur in batch cultures, and the extent of desulfurization and the chemical fate of the residual sulfur in the oil after treatment were determined. Gas chromatography (GC), flame ion...

Journal: :Dalton transactions 2013
Xiao Xiao Kuizhan Shao Lisong Yan Zemin Mei Dongsheng Zhu Lin Xu

A novel macrocyclic organotin(iv) carboxylate {[n-Bu2Sn(O)]9(CH2CH3)2L}·3CH2CH3OH (complex 1) (L = (9-carboxymethyl-1,3,8,10-tetraoxo-3,8,9,10-tetrahydro-1H-anthra[2,1,9-def;6,5,10-d'e'f']diisoquinolin-2-yl)-acetic acid) was generated by the reaction of dibutyltin oxide with amide dicarboxylic acid L and characterized by elemental analysis, IR, (1)H and (13)C NMR spectroscopy. X-ray crystallogr...

Journal: :Biochemistry & Pharmacology: Open Access 2014

Journal: :Journal of the Fuel Society of Japan 1966

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