SulfurWe have investigated the interaction of Ag and S coadsorbed on a Ru(001) surface using high-resolution soft X-ray photoemission spectroscopy of the S 2p core level and valence region. The interaction of adsorbed sulfur and the first layer of Ag adatoms is weak. At ΘS + ΘAg < ...
The basal thiolate ligands are triply bridging, but with an unusual stereochemistry in which the sulfur atom lies outside the polyhedron of four atoms to which it is bonded. The distances between silver atoms (Agbascen-Agbasper, mean 2.95 ; Agbascen-Agpod = 3.05 ; and Agbr-Agpod = ...
The existence of elements of silver and sulfur in the electron-dense granules and cytoplasm detected by X-ray microanalysis suggested the antibacterial mechanism of silver: DNA lost its replication ability and the protein became inactivated after Ag treatment. The slighter morphological changes of S....
Synthesis of Sulfur-Containing Olefinic Peptide Mimetic Farnesyl Transferase Inhibitors Using the Nozaki-Hiyama-Kishi Reaction and Cuprate SN2’ Displacements. J... Hu,Yang,Sheng,... - 《Journal of Organic Chemistry》 被引量: 1发表: 1999年 Lattice thermal expansion and anisotropic displacements in ...
Alternating current electrolysis for the electrocatalytic synthesis of mixed disulfide via sulfur–sulfur bond metathesis towards dynamic disulfide libraries. Chem. Eur. J. 26, 3129–3136 (2020). Article CAS PubMed Google Scholar Bortnikov, E. O. & Semenov, S. N. Coupling of alternating ...
Because silver is a very active metal elements, fear moist, easily and sulfur in the air from a chemical reaction, the surface will produce a black silver sulfide film. 因为银是一种相当活跃的金属元 素,最怕潮湿,极易和空气中的硫起化学反应,表面会生成黑色的硫化银膜。 ParaCrawl Corpus Natu...
3. Use and Manufacturing3.1 Description SILVER(I) SULFIDE, with the chemical formula Ag2S, has the CAS number 21548-73-2. It appears as a black solid with no odor. The basic structure of SILVER(I) SULFIDE consists of two silver atoms bonded to one sulfur atom. This compound is insoluble...
When exposed to air, the alloy tarnishes in reaction to sulfur, pollutants, and moisture. The result is a dull, darkened, or even dirty appearance to what was once a brilliant shine. Types of silver Fine silver Silver is found in nature in the form of ore or as a byproduct of ...
Applying a model for mass transfer in the tube, values of pollutant deposition velocity at the surface and of reaction probability γ as a function of concentration, mixture composition, flow rate, reactor length, and exposure time were obtained. In dry air, H 2S reacts with Ag at a ...
containing gasesin the air. The reaction creates alayer of silver sulfideon the silver, which appears as discoloration that darkens over time. Interestingly, the winter season can accelerate tarnishing because of sulfur emissions from indoor heating. Moisture and humidity can also cause silver to ...