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3,176 Newest Publications about the topic sulfur

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MOCVD of Vertically Aligned ZnO Nanowires Using Bidentate Ether Adducts of Dimethylzinc

01-Mar-2011 | Ashraf, Sobia; Jones, Anthony C.; Bacsa, John; Steiner, Alexander; Chalker, Paul R.; Beahan, Peter; Hindley, Sarah; ..., Chemical Vapor Deposition, 2011

Abstract The dimethylzinc‐bidentate ether adducts [Me2Zn(1,4‐dioxane)] (1), [Me2Zn(1,2‐dimethoxyethane)] (2) and [Me2Zn(1,4‐thioxane)] (3) are used as precursors for the growth of vertically aligned zinc oxide (ZnO) nanowires (NWs) by liquid‐injection, metal‐organic (MO)CVD. The ZnO NWs are ...

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Chain Length Dependence in Diketopyrrolopyrrole/Thiophene Oligomers

01-Mar-2011 | Karsten, Bram P.; Janssen, René A. J., Macromolecular Chemistry and Physics, 2011

Abstract Diketopyrrolopyrrole‐based polymers have shown good performance in polymer solar cells. Monodisperse short oligomers, monomer up to tetramer, of one of these polymers, pBBTDPP1, have been prepared and the chain length dependence of their optical and electrochemical properties has been ...

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Synthesis, Antiproliferative Activity and DNA‐Binding Properties of Nitrogen and Sulfur Heterocyclic Norcantharidin Acylamide Acid

01-Mar-2011 | Wang, Na; Wang, Yunyun; Wang, Xiaoxia; Zheng, Xiaoliang; Yan, Dongmeic; Lin, Qiuyue, Chinese Journal of Chemistry, 2011

Abstract Three novel norcantharidin acylamide acids (L1N‐thiadiazole norcantharidin acylamide acid, C10H11N3O4S; L2N‐thiazole norcantharidin acylamide acid, C11H12N2O4S and L3N‐benzothiazole norcantharidin acylamide acid, C15H14N2O4S) were synthesized by the reactions of norcantharidin ...

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Kinetics of reaction of benzyl chloride with H2S‐rich aqueous monoethanolamine: selective synthesis of dibenzyl sulfide under liquid–liquid phase‐transfer catalysis

01-Mar-2011 | Sen, Sujit; Pradhan, Narayan C.; Patwardhan, Anand V., Asia-Pacific Journal of Chemical Engineering, 2011

Abstract The development of viable alternative processes for the conversion of hydrogen sulfide (H2S) to produce commercially important chemicals is important in process industries, particularly in refineries handling large quantity of sour crude. This work was undertaken to synthesize ...

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Extension of the Clathrate Family: The Type X Clathrate Ge79P29S18Te6

01-Mar-2011 | Kirsanova, Maria A.; Olenev, Andrei V.; Abakumov, Artem M.; Bykov, Mikhail A.; Shevelkov, Andrei V., Angewandte Chemie International Edition, 2011

Now they are 10! The title compound displays a new type of crystal structure and is labeled clathrate X according to the general classification of clathrate structures. In contrast to typical clathrates, this compound has three‐coordinate atoms within the framework and combines distorted ...

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(5S)‐5‐(Trifluoromethyl)pyrrolidin‐2‐one as a Promising Building Block for Fluoroorganic Chemistry

01-Mar-2011 | Bezdudny, Andrii V.; Alekseenko, Anatoliy N.; Mykhailiuk, Pavel K.; Manoilenko, Olga V.; Shishkin, Oleg V.; Pustovit ..., European Journal of Organic Chemistry, 2011

Abstract Pyroglutamic acid smoothly reacts with sulfur tetrafluoride at room temperature to afford enantiomerically pure (5S)‐5‐(trifluoromethyl)pyrrolidin‐2‐one (92 % yield, >99 % ee). Representative one‐step transformations of 1 provided both γ‐(S)‐trifluoromethyl GABA and ...

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Divergent Approach to Gabosines and Anhydrogabosines: Enantioselective Syntheses of (+)‐Epiepoformin, (+)‐EpoKformin, (+)‐Gabosine A, and Gabosines B and F

01-Mar-2011 | Toribio, Gladis; Marjanet, Georgina; Alibés, Ramon; de March, Pedro; Font, Josep; Bayón, Pau; Figuered ..., European Journal of Organic Chemistry, 2011

Abstract A divergent approach to polyoxygenated methylcyclohexanes has been applied to synthesize several gabosines and anhydrogabosines. The starting hydroxycyclohexenone, which is readily available in any antipodal form, provides access to both enantiomers of the target compounds. The ...

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Artificial [FeFe]‐Hydrogenase: On Resin Modification of an Amino Acid to Anchor a Hexacarbonyldiiron Cluster in a Peptide Framework

01-Mar-2011 | Roy, Souvik; Shinde, Sandip; Hamilton, G. Alexander; Hartnett, Hilairy E.; Jones, Anne K., European Journal of Inorganic Chemistry, 2011

Abstract A general method for immobilization of synthetic analogues of the [FeFe]‐hydrogenase in designed peptides via on resin modification of an amino acid side chain with a dithiol functional group is described. Utilizing a unique amine side chain as anchor, the dithiol unit is coupled to ...

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Sulfoxygenation of Active Site Models of [NiFe] and [FeFe] Hydrogenases – A Commentary on Possible Chemical Models of Hydrogenase Enzyme Oxygen Sensitivity

01-Mar-2011 | Darensbourg, Marcetta Y.; Weigand, Wolfgang; Darensbourg, Marcetta Y.; Weigand, Wolfgang, European Journal of Inorganic Chemistry, 2011

Abstract The organometallic active sites in [NiFe]‐ and [FeFe]H2ases are sensitive to oxygen in varying degrees. The microorganisms that utilize these enzymes for their hydrogen metabolism, and the enzymes themselves, have evolved from a reducing to an oxidizing environment in ways to avoid ...

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Measurement of the absolute Raman scattering cross sections of sulfur and the standoff Raman detection of a 6‐mm‐thick sulfur specimen at 1500 m

01-Mar-2011 | Aggarwal, R. L.; Farrar, L. W.; Polla, D. L., Journal of Raman Spectroscopy, 2011

Abstract The absolute Raman scattering cross sections (σRS) for the 471, 217, and 153 cm−1 modes of sulfur were measured as 6.0 ± 1.2 × 10−27, 7.7 ± 1.6 × 10−27, and 1.2 ± 0.24 × 10−26 cm2 at 815, 799, and 794 nm, respectively, using a 785‐nm pump laser. The corresponding values of σRS at 1120, ...

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