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Chem.a chemical linkage consisting of two covalent bonds between two atoms of a molecule, represented in chemical formulas by two lines, two dots, or four dots, as CH2=CH2; CH2:CH2; CH2::CH2.[1885-90]
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Universalium. 2010.
double bond
Look at other dictionaries:
double bond — Bond Bond (b[o^]nd), n. [The same word as band. Cf. {Band}, {Bend}.] 1. That which binds, ties, fastens, or confines, or by which anything is fastened or bound, as a cord, chain, etc.; a band; a ligament; a shackle or a manacle. [1913 Webster]… … The Collaborative International Dictionary of English
double bond — n a chemical bond in which two pairs of electrons are shared by two atoms in a molecule and which is usu. represented in chemical formulas by two lines (as in the formula for ethylene H2C=CH2) compare TRIPLE BOND see UNSATURATED (b) … Medical dictionary
double bond — n. Chem. the sharing of two pairs of electrons between two atoms, usually represented in structural formulas by dots or dashes, as C:C or C=C … English World dictionary
Double bond — A double bond in chemistry is a chemical bond between two chemical elements involving four bonding electrons instead of the usual two. The most common double bond, that between two carbon atoms, can be found in alkenes. Many types of double bonds … Wikipedia
double bond — UK / US noun [countable] Word forms double bond : singular double bond plural double bonds chemistry a chemical bond in which two atoms share two pairs of electrons … English dictionary
double bond — dvigubasis ryšys statusas T sritis chemija apibrėžtis Du kovalentiniai ryšiai tarp dviejų atomų. atitikmenys: angl. double bond; ethylene bond rus. двойная связь; этиленовая связь ryšiai: sinonimas – dvilypis ryšys sinonimas – etileninis ryšys … Chemijos terminų aiškinamasis žodynas
double bond — dvilypis ryšys statusas T sritis fizika atitikmenys: angl. double bond vok. Doppelbindung, f rus. двойная связь, f pranc. liaison double, f … Fizikos terminų žodynas
Double bond rule — The double bond rule states that chemical elements with a principal quantum number greater than 2 (e.g. Period 3 elements and lower) do not form multiple bonds (e.g. double bonds and triple bonds) with themselves or with other elements.[1] The… … Wikipedia
double bond cleavage — dvigubojo ryšio trūkis statusas T sritis chemija apibrėžtis π ryšio trūkis dvigubajame ryšyje. atitikmenys: angl. double bond cleavage; double bond opening; opening of a double bond rus. разрыв двойной связи; раскрытие двойной связи … Chemijos terminų aiškinamasis žodynas
double bond opening — dvigubojo ryšio trūkis statusas T sritis chemija apibrėžtis π ryšio trūkis dvigubajame ryšyje. atitikmenys: angl. double bond cleavage; double bond opening; opening of a double bond rus. разрыв двойной связи; раскрытие двойной связи … Chemijos terminų aiškinamasis žodynas
double-bond isomers — Two or more olefinic compounds with identical molecular formulas but having the double bond at different locations in the molecule … Petroleum refining glossary
