- methylene resonance
- Полимеры: резонанс метиленовой группы
Универсальный англо-русский словарь. Академик.ру. 2011.
methylene resonance
Смотреть что такое "methylene resonance" в других словарях:
carbene — /kahr been/, n. the radical CH2 and its derivatives. [CARB + ENE] * * * ▪ chemistry Introduction any member of a class of highly reactive molecules containing divalent carbon atoms that is, carbon atoms that utilize only two of the four… … Universalium
Carbene — In chemistry, a carbene is a highly reactive organic molecule containing a carbon atom with six valence electrons and having the general formula: R1R2C: (two substituents and two electrons). [Organic Chemistry R.T Morrison, R.N Boyd pp 473 478]… … Wikipedia
Molecular vibration — A molecular vibration occurs when atoms in a molecule are in periodic motion while the molecule as a whole has constant translational and rotational motion. The frequency of the periodic motion is known as a vibration frequency, and the typical… … Wikipedia
heterocyclic compound — Any of a class of organic compounds whose molecules contain one or more rings of atoms with at least one atom (the heteroatom) being an element other than carbon, most frequently oxygen, nitrogen, or sulfur. As in regular cyclic hydrocarbons,… … Universalium
Коптюг — Коптюг, Валентин Афанасьевич Валентин Афанасьевич Коптюг Дата рождения: 9 июня 1931(1931 06 09) Место рождения: Юхнов, Западная область, СССР Дата смерти: 10 января 1997 … Википедия
carboxylic acid — Chem. any organic acid containing one or more carboxyl groups. [1900 05; CARBOXYL + IC] * * * Any organic compound with the general chemical formula ―COOH in which a carbon (C) atom is bonded to an oxygen (O) atom by a double bond to make a… … Universalium
Persistent carbene — A stable carbene: isolated 1,3 dimesitylimidazol 2 ylidene in a Schlenk flask (stir bar also present). A persistent carbene (also known as stable carbene or Arduengo carbene) is a type of carbene demonstrating particular stability. The best known … Wikipedia
Wittig reaction — The Wittig reaction is a chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide (often called a Wittig reagent) to give an alkene and triphenylphosphine oxide. [cite journal author = Georg Wittig, Ulrich Schöllkopf journal … Wikipedia
Vibration moleculaire — Vibration moléculaire Une vibration moléculaire se produit lorsque les atomes d une molécule sont dans un mouvement périodique pendant que la molécule dans son ensemble subit un mouvement de translation et rotation. La fréquence du mouvement… … Wikipédia en Français
Arenium ion — An arenium ion in organic chemistry is the cyclohexadienyl cation that appears as a reactive intermediate in electrophilic aromatic substitution. [ Stable carbocations. CXVIII. General concept and structure of carbocations based on… … Wikipedia
Ylide — An ylid or ylide (US) is a neutral molecule with a positive and a negative charge on adjacent atoms. They appear in organic chemistry as reagents or reactive intermediates. An ylide is accompanied to some extent by (and often depicted as) its… … Wikipedia
