Search results
Results from the WOW.Com Content Network
Thiocyanate is produced by the reaction of elemental sulfur or thiosulfate with cyanide: + + + The second reaction is catalyzed by thiosulfate sulfurtransferase, a hepatic mitochondrial enzyme, and by other sulfur transferases, which together are responsible for around 80% of cyanide metabolism in the body.
Phenyl thiocyanate and phenyl isothiocyanate are isomers. Organic thiocyanates are organic compounds containing the functional group RSCN. the organic group is attached to sulfur: R−S−C≡N has a S–C single bond and a C≡N triple bond. [1] Organic thiocyanates are valued building blocks.
Thiocyanate salts are typically prepared by the reaction of cyanide with elemental sulfur: 8 NaCN + S 8 → 8 NaSCN. Sodium thiocyanate crystallizes in an orthorhombic cell. Each Na + center is surrounded by three sulfur and three nitrogen ligands provided by the triatomic thiocyanate anion. [3]
Thiocyanate shares its negative charge approximately equally between sulfur and nitrogen. [10] Thiocyanate can bind metals at either sulfur or nitrogen — it is an ambidentate ligand. Other factors, e.g. kinetics and solubility, sometimes influence the observed isomer. For example, [Co(NH 3) 5 (NCS)] 2+ is the thermodynamic isomer, but [Co(NH ...
This reaction takes place in two steps. In the first step, thiosulfate is reduced by the thiol group on cysteine-247 1, to form a persulfide and a sulfite 2.In the second step, the persulfide reacts with cyanide to produce thiocyanate, re-generating the cysteine thiol 1.
Indeed, that reaction suffers from competing equilibria attributed to the weak oxidizing power of iodine; the major product is sulfur dicyanide. [7] The following year, Schneider produced thiocyangen from silver thiocyanate and disulfur dichloride, but the product disproportionated to sulfur and trisulfur dicyanides. [6]
Potassium thiocyanate is the chemical compound with the molecular formula KSCN. It is an important salt of the thiocyanate anion , one of the pseudohalides . The compound has a low melting point relative to most other inorganic salts.
It produces a more impressive snake, but its execution depends upon mercury (II) thiocyanate, which is no longer in common use due to its toxicity. [1] For a "sugar snake", sodium bicarbonate and sugar are the commonly used chemicals. [2] Once lit, the fireworks emit smoke and spew out ash resembling a snake via an intumescent reaction. They ...