Results 171 to 180 of about 231,798 (197)

Sulfides in organic synthesis. Application of sulfides

Russian Chemical Reviews, 1994
The results of studies on the use of sulfides as synthons in organic synthesis are treated systematically and surveyed. The practical applications of sulfides are examined. The bibliography includes 187 references.
openaire   +2 more sources

Reductive Sulfidation. Conversion of Aldehydes into Sulfides

Synthetic Communications, 1976
Abstract Carbonyl compounds have been converted into 1,3-oxathiolanes or 1,3-oxathianes and then reduced with “mixed hydride” to β-hydroxyethyl (or on further reduction ethyl) or γ-hydroxypropyl sulfides, respectively.1 However, this overall conversion of a carbonyl compound to a sulfide (a process for which the name reductive sulfidation is suggested ...
openaire   +2 more sources

Adaptations to sulfide in the meiofauna of the sulfide system. I. 35S-sulfide accumulation and the presence of a sulfide detoxification system

Journal of Experimental Marine Biology and Ecology, 1979
Abstract Life in the sulfide system requires the ability to withstand the toxic effects of long-term sulfide stress. The adaptations of sulfide-system interstitial metazoans to sulfide stress have been investigated using 35 S-sulfide. One possible adaptation, the total exclusion of sulfide at the body wall, could not be demonstrated.
Miles A. Crenshaw, Eric N. Powell, Reinhardt M. Rieger   +2 more
openaire   +2 more sources

Photooxidation of methyl sulfide, ethyl sulfide, and methanethiol

Environmental Science & Technology, 1984
Products of sunlight-irradiated mixtures of oxides of nitrogen and alkyl sulfides (RSR, R = CH/sub 3/, C/sub 2/H/sub 5/) and methanethiol (CH/sub 3/SH) in air include formaldehyde (R = CH/sub 3/), acetaldehyde and PAN (R = C/sub 2/H/sub 5/), sulfur dioxide, and alkyl nitrates (RONO/sub 2/) as well as particulate alkanesulfonic acids (RSO/sub 2/OH) and ...
openaire   +3 more sources

On the volumetric determination of hydrogen sulfide and soluble sulfides

Analytica Chimica Acta, 1953
Abstract I. Common sources of eiior in the lodumetric methods fur the determination ol hydiogen sultide and soluble sulfides are discussed. An improved method for the lodometric dctermination is described and its precision and accuracy are discussed. II. The volumetric determination of sulfides by means of alkaline hypochlorite solutions is discussed.
openaire   +2 more sources

ChemInform Abstract: MOESSBAUER SPECTRA OF TERNARY TIN(IV) SULFIDES IN THE SYSTEMS SODIUM SULFIDE‐TIN SULFIDE (NA2S‐SNS2), BARIUM SULFIDE‐TIN SULFIDE (BAS‐SNS2), AND LEAD SULFIDE‐TIN SULFIDE (PBS‐SNS2)

Chemischer Informationsdienst, 1976
AbstractMessungen der 119Sn‐Mößbauer‐Spektren an einer Reihe von ternären Sulfiden (wie Na4SnS4, Na6Sn2S7, Ba2SnS4, Ba3Sn2S7, Na2SnS3 (Tieftemperaturform) und PbSnS3) bekannter Kristallstruktur zeigen, daß die chemische Isomerenverschiebung auf die Koordinationszahl am Sn‐Zentralatom anspricht und beim Übergang von tetraedrischer über ...
Norman N. Greenwood, Robert Greatrex, Michel Ribes   +2 more
openaire   +2 more sources

Sulfidation Kinetics of Silver Nanoparticles Reacted with Metal Sulfides

Environmental Science & Technology, 2014
Recent studies have documented that the sulfidation of silver nanoparticles (Ag-NP), possibly released to the environment from consumer products, occurs in anoxic zones of urban wastewater systems and that sulfidized Ag-NP exhibit dramatically reduced toxic effects.
Eberhard Morgenroth, Eberhard Morgenroth, Andreas Voegelin, Brian Sinnet, Ralf Kaegi, Basilius Thalmann   +5 more
openaire   +3 more sources

The preparation of metal sulfides and organo-metal sulfides from metal alkyls and hydrogen sulfide

Inorganica Chimica Acta, 1989
AbstractThe room temp. reaction of AlR3 (R: Me, Et, iBu) with H2S in toluene gives air‐sensitive solids which are postulated to be mixtures of Al2S3 and polymeric (RAlS)x. A species of the empirical formula MeGaS is produced from GaMe3 and H2S. The reactions of M(CH2‐SiMe3)n (M: Cd, Hg, n = 2; M: Ti, n = 4) and MgEt2 with H2S are also described.
Curtis E. Johnson, Christopher G. Bauch
openaire   +3 more sources

New organosols of nickel sulfides, palladium sulfides, manganese sulfide, and mixed metal sulfides and their use in preparation of semiconducting polymer-metal sulfide composites

Colloid & Polymer Science, 1991
Organosols of NiS, PdS, and MnS in N,N-dimethylformamide were prepared by reaction of the metal acetate with H2S. Organosols of mixed-metal sulfides (ZnxCd1−xS, HgxCd1−xS, HgxCu1−xS, CdxMn1−xS, HgxMn1−xS, HgxCd1−xS, and MnxZn1−xS) were similarly obtained by reaction of mixtures of the metal salts with H2S.
Kenji Kubota, Takakazu Yamamoto, Atsushi Taniguchi, Kohtaro Osakada, Somanath Dev, Etsuo Kubota   +5 more
openaire   +2 more sources

Sulfide-quinone and sulfide-cytochrome reduction in Rhodobacter capsulatus

Photosynthesis Research, 1994
The reduction by sulfide of exogenous ubiquinone is compared to the reduction of cytochromes in chromatophores of Rhodobacter capsulatus. From titrations with sulfide values for Vmax of 300 and 10 μmoles reduced/mg bacteriochlorophyll a·h, and for Km of 5 and 3 μM were estimated, for decyl-ubiquinone-and cytochrome c-reduction, respectively.
Inge Herrman, Ulrich Schreiber, Etana Padan, Christof Klughammer, Yosepha Shahak, Günter Hauska   +5 more
openaire   +3 more sources