Chemijos terminų aiškinamasis žodynas – 2-asis patais. ir papild. leid. – Vilnius: Mokslo ir enciklopedijų leidybos institutas. Kazys Daukšas, Jurgis Barkauskas, Vitas Daukšas. 2003.
elektriškai teigiamas pakaitas — statusas T sritis chemija apibrėžtis Pakaitas, kurio elektrinis neigiamumas mažesnis negu vandenilio. atitikmenys: angl. electropositive substituent rus. электроположительный заместитель … Chemijos terminų aiškinamasis žodynas
электроположительный заместитель — elektriškai teigiamas pakaitas statusas T sritis chemija apibrėžtis Pakaitas, kurio elektrinis neigiamumas mažesnis negu vandenilio. atitikmenys: angl. electropositive substituent rus. электроположительный заместитель … Chemijos terminų aiškinamasis žodynas
organometallic compound — ▪ chemical compound Introduction any member of a class of substances containing at least one metal to carbon bond in which the carbon is part of an organic group. Organometallic compounds constitute a very large group of substances that have… … 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
Electronegativity — This electrostatic potential map shows how the oxygen atom has a more negative charge than the hydrogen atoms. Electronegativity, symbol χ (the Greek letter chi), is a chemical property that describes the tendency of an atom or a functional group … Wikipedia
Hyperconjugation — In organic chemistry, hyperconjugation is the interaction of the electrons in a sigma bond (usually C–H or C–C) with an adjacent empty (or partially filled) non bonding p orbital or antibonding π orbital or filled π orbital, to give an extended… … Wikipedia
chemical compound — Introduction any substance composed of identical molecules consisting of atoms (atom) of two or more chemical elements (chemical element). All the matter in the universe is composed of the atoms of more than 100 different chemical elements … Universalium
Polyphenol — Plant derived polyphenol, tannic acid, formed by esterification of ten equivalents of the phenylpropanoid derived gallic acid to a monosaccharide (glucose) core from primary metabolism … Wikipedia
Organoborane — PropertiesThe C B bond has low polarity (the difference in electronegativity 2.55 for carbon and 2.04 for boron) and therefore alkyl boron compounds are in general stable though easily oxidized. Vinyl groups and aryl groups donate electrons and… … Wikipedia
Haloketone — A haloketone in organic chemistry is a functional group consisting of a ketone group or more general a carbonyl group with a α halogen substituent. The general structure is RR C(X)C(=O)R where R is an alkyl or aryl residue and X any one of the… … Wikipedia
