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Encyclopedia > Cyanate

The cyanate ion is an anion consisting of one oxygen atom, one carbon atom, and one nitrogen atom (OCN), in that order, and possesses 1 unit of negative charge, borne mainly by the nitrogen atom. In organic compounds the cyanate group is a functional group. An ion is an atom, group of atoms, or subatomic particle with a net electric charge. ... An anion is an ion with negative charge. ... General Name, Symbol, Number oxygen, O, 8 Chemical series Nonmetals, chalcogens Group, Period, Block 16, 2, p Appearance colorless Atomic mass 15. ... Properties In chemistry and physics, an atom (Greek άτομον meaning indivisible) is the smallest possible particle of a chemical element that retains its chemical properties. ... General Name, Symbol, Number carbon, C, 6 Chemical series nonmetals Group, Period, Block 14, 2, p Appearance black (graphite) colorless (diamond) Atomic mass 12. ... General Name, Symbol, Number nitrogen, N, 7 Chemical series nonmetals Group, Period, Block 15, 2, p Appearance colorless Atomic mass 14. ... Electric charge is a fundamental conserved property of some subatomic particles, which determines their electromagnetic interactions. ... Benzene An organic compound is any member of a large class of chemical compounds whose molecules contain carbon, with the exception of carbides, carbonates, carbon oxides and elementary carbon. ... In organic chemistry functional groups are specific groups of atoms within molecules, that are responsible for the characteristic chemical reactions of those molecules. ...

The cyanate ion is an ambident nucleophile in nucleophilic substitution because it can react to form an alkyl cyanate R-OCN (exception) or an alkyl isocyanate R-NCO (rule). Aryl cyanates (C6H5OCN) can be formed by a reaction of phenol with cyanogen chloride (ClCN) in the presence of a base. In chemistry, a nucleophile (literally nucleus lover as in nucleus and phile) is a reagent that forms a chemical bond to its reaction partner (the electrophile) by donating both bonding electrons [1]. Because nucleophiles donate electrons, they are by definition Lewis bases (see acid-base reaction theories). ... In chemistry, nucleophilic substitution is a class of substitution reaction in which an electron-rich nucleophile attacks a molecule and replaces a group or atom, called the leaving group. ... Isocyanate is the chemical group of atoms -N=C=O (1 nitrogen, 1 carbon, 1 oxygen), as opposed to cyanate, -O-C≡N, which is formed from cyanogen in the normal -ate manner. ... In the context of organic molecules, aryl refers to any member of the set of functional groups or substituents that are derived from a simple aromatic ring. ... Phenol, also known under an older name of carbolic acid, is a colorless crystalline solid with a typical sweet tarry odor. ... Cyanogen is a chemical compound (CN)2. ...

Cyanates are salts of cyanic acid for example potassium cyanate (KNCO). Cyanic acid is a colourless poisonous liquid with a boiling point of 23. ... Potassium cyanate or potassium isocyanate is an inorganic compound and the potassium salt of cyanic acid with the chemical formula of KOCN (also: KCNO). ...

The 'cyanate ion is relatively non-toxic in comparison to cyanides. Use of this fact is made in cyanide decontamination processes where a permanganate oxidation converts toxic cyanide to cyanate.

Functional groups
Chemical class: Alcohol • Aldehyde • Alkane • Alkene • Alkyne • Amide • Amine • Azo compound • Benzene derivative • Carboxylic acid • Cyanate • Ester • Ether • Haloalkane • Imine • Isocyanide • Isocyanate • Ketone • Nitrile • Nitro compound • Nitroso compound • Peroxide • Phosphoric acid • Pyridine derivative • Sulfone • Sulfonic acid • Sulfoxide • Thioether • Thiol • Toluene derivative

  Results from FactBites:
Cyanic acid and cyanates - LoveToKnow 1911 (649 words)
Caustic alkalis hydrolyse it readily to the alkaline chloride and cyanate.
Potassium cyanate may be prepared by heating potassium cyanide with an oxidizing agent, or by heating potassium ferrocyanide with manganese dioxide, potassium carbonate or potassium dichromate (J. v.
43) by distilling a mixture of potassium ethyl sulphate and potassium cyanate.
Novolak cyanate blends - Patent 6437057 (1046 words)
Blends of novolaks and cyanates, such blends can be thermally hardened in a short time and without using a catalyst and have an excellent storage stability.
Cyanates of the general formula II are generally prepared by reacting the corresponding oligomeric phenols with cyanogen chloride in the presence of a tertiary amine on the industrial scale and are likewise available in various grades and with various properties.
In the blend of the invention, the cyanate fraction of the combined amount of cyanate (II) and novolak (I) is judiciously from 10 to 90% by weight and the novolak fraction judiciously from 90 to 10% by weight, corresponding to a weight ratio cyanate:novolak of 10:90 to 90:10.
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