mesomerism

mesomerism
Displacement or delocalization of electrons within a molecule in such a way as to create fractional charges on different parts of the molecule; resonance.

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me·som·er·ism mə-'säm-ə-.riz-əm, -'zäm- n RESONANCE (3)
me·so·mer·ic .mez-ə-'mer-ik, .mēz- adj

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me·som·er·ism (mə-somґər-iz″əm) the existence of organic chemical structures that can not be accurately represented by a single structural formula, the actual formula lying intermediate between several possible representations that differ only in the position of electrons.

Medical dictionary. 2011.

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  • mesomerism — mezomerijos efektas statusas T sritis chemija apibrėžtis Elektronų tankio persiskirstymas konjuguotosiose π elektronų ir kitose sistemose. atitikmenys: angl. conjugation effect; mesomeric effect; mesomerism; resonance effect rus. мезомерный… …   Chemijos terminų aiškinamasis žodynas

  • mesomerism — mezomerija statusas T sritis chemija apibrėžtis Nekanoninės struktūros molekulių egzistavimas. atitikmenys: angl. mesomerism rus. мезомерия …   Chemijos terminų aiškinamasis žodynas

  • mesomerism — mezomerija statusas T sritis fizika atitikmenys: angl. mesomerism vok. Mesomerie, f rus. мезомерия, f pranc. mésomérie, f …   Fizikos terminų žodynas

  • mesomerism — /mi zom euh riz euhm, som /, n. Chem. resonance (def. 6). [1925 30; MESO + merism, on the model of ISOMERISM, TAUTOMERISM] * * * …   Universalium

  • mesomerism — noun The property of some molecules of having a structure that cannot be represented by a single structural formula; resonance See Also: mesomeric …   Wiktionary

  • mesomerism — [mɪ sɒmərɪz(ə)m, mɪ zɒm ] noun Chemistry old fashioned term for resonance. Derivatives mesomeric adjective Origin 1930s: from meso after tautomerism …   English new terms dictionary

  • mesomerism — me·som·er·ism …   English syllables

  • mesomerism — /məˈsoʊmərɪzəm/ (say muh sohmuhrizuhm), / ˈzoʊ / (say zoh ) noun Chemistry → resonance (def. 7) …  

  • mesomerism — mə̇ˈzäməˌrizəm, ˈsä noun Etymology: mes + merism : resonance 5 …   Useful english dictionary

  • Mesomeric effect — See also: Resonance (chemistry) +M effect of a methoxy group in an ether …   Wikipedia

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