cyano group definition of cyano group in the Free Online Encyclopedia.

cyano group (sī`ənō, sī-ăn`ō), in chemistry, functional group functional group, in organic chemistry, group of atoms within a molecule that is responsible for certain properties of the molecule and reactions in which it takes part.
..... Click the link for more information. that consists of a carbon atom joined to a nitrogen atom by a triple bond; it can be joined to an atom or another group by a single bond to the carbon atom. When a cyano group is joined to hydrogen, it forms hydrogen cyanide hydrogen cyanide, HCN, colorless, volatile, and extremely poisonous chemical compound whose vapors have a bitter almond odor. It melts at −14°C; and boils at 26°C;. It is miscible in all proportions with water or ethanol and is soluble in ether.
..... Click the link for more information. . When it is joined to a metal, it forms a metal cyanide cyanide , chemical compound containing the cyano group, -CN. Cyanides are salts or esters of hydrogen cyanide (hydrocyanic acid, HCN) formed by replacing the hydrogen with a metal (e.g., sodium or potassium) or a radical (e.g., ammonium or ethyl).
..... Click the link for more information. . When it is joined to an alkyl group alkyl group , in chemistry, group of carbon and hydrogen atoms derived from an alkane molecule by removing one hydrogen atom (see radical). The name of the alkyl group is derived from the name of its alkane by replacing the -ane suffix with -yl, e.g.
..... Click the link for more information. or aryl group aryl group , in chemistry, group of atoms derived from benzene or from a benzene derivative by removing one hydrogen that is bonded to the benzene ring (see radical). The simplest aryl group is phenyl, C₆H₅ ; it is derived from benzene.
..... Click the link for more information. , it forms a nitrile. When two cyano groups are joined directly to one another, they form the cyanogen cyanogen , NCCN, colorless, flammable, extremely poisonous gas with a characteristic odor somewhat like that of hydrogen cyanide. It melts at −35°C;, boils at −21°C;, and is soluble in water, ethanol, or ether. It is chemically very active.
..... Click the link for more information. molecule, NCCN. Both the cyano group and hydrogen cyanide have been found in interstellar space.

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