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In methyl thiocyanate, N≡C and C−S distances are 116 and 176 pm. By contrast, N=C and C=S distances are 117 and 158 pm in isothiocyanates. [7] Typical bond angles for C−S−C are 100°. [3] By contrast C−N=C in aryl isothiocyanates is 165°. Again, the thiocyanate isomers are quite different with C−S−C angle near 100°.
Thiocyanate [6] is known to be an important part in the biosynthesis of hypothiocyanite by a lactoperoxidase. [7] [8] [9] Thus the complete absence of thiocyanate or reduced thiocyanate [10] in the human body, (e.g., cystic fibrosis) is damaging to the human host defense system.
Allyl thiocyanate isomerizes to the isothiocyanate: [4] CH 2 =CHCH 2 SCN → CH 2 =CHCH 2 NCS. Isothiocyanates can be prepared by treating organic dithiocarbamate salts with lead nitrate or tosyl chloride. [5] [6] Synthesis of phenyl isothiocyanate. Isothiocyanates may also be accessed by the fragmentation reactions of 1,4,2-oxathiazoles. [7]
The following is a list of straight-chain alkanes, the total number of isomers of each (including branched chains), and their common names, sorted by number of carbon atoms. [ 1 ] [ 2 ] Number of C atoms
Allyl isothiocyanate is produced commercially by the reaction of allyl chloride and potassium thiocyanate: [4] CH 2 =CHCH 2 Cl + KSCN → CH 2 =CHCH 2 NCS + KCl. The product obtained in this fashion is sometimes known as synthetic mustard oil. Allyl thiocyanate isomerizes to the isothiocyanate: [8] CH 2 =CHCH 2 SCN → CH 2 =CHCH 2 NCS
Download as PDF; Printable version; ... This list may not reflect recent changes. Organic thiocyanates; Thiocyanate;
Sodium thiocyanate (sometimes called sodium sulphocyanide) is the chemical compound with the formula NaSCN. This colorless deliquescent salt is one of the main sources of the thiocyanate anion . As such, it is used as a precursor for the synthesis of pharmaceuticals and other specialty chemicals . [ 2 ]
Thiocyanic acid is a chemical compound with the formula H S C N and structure H−S−C≡N, which exists as a tautomer with isothiocyanic acid (H−N=C=S). [8] The isothiocyanic acid tautomer tends to dominate with the compound being about 95% isothiocyanic acid in the vapor phase.