zérovalent — zérovalent, ente [zeʀovalɑ̃, ɑ̃t] adj. ÉTYM. Mil. XXe; comp. hybride de zéro, et du lat. valens. ❖ ♦ Phys. Nullivalent … Encyclopédie Universelle
zerovalent — | ̷ ̷(ˌ) ̷ ̷| ̷ ̷ ̷ ̷ adjective Etymology: zero (I) + valent : having a valence of zero … Useful english dictionary
-valent — valent, ente ♦ Élément, de équivalent (en chimie), signifiant « qui a pour valence » : monovalent, bivalent, trivalent, tétravalent. valent élément, du lat. valens, ppr. de valere, valoir . ⇒ VALENT, élém. formant Élém. tiré du lat. valens,… … Encyclopédie Universelle
Coupling reaction — A coupling reaction in organic chemistry is a catch all term for a variety of reactions where two hydrocarbon fragments are coupled with the aid of a metal catalyst. In one important reaction type a main group organometallic compound of the type… … Wikipedia
Sonogashira coupling — In organic chemistry, a Sonogashira coupling is a coupling reaction of terminal alkynes with aryl or vinyl halides. This reaction was first reported by Kenkichi Sonogashira and Nobue Hagihara in 1975. [cite journal author = K. Sonogashira, Y.… … Wikipedia
Organopalladium — chemistry is a branch of organometallic chemistry that deals with organic palladium compounds and their reactions. Palladium is often used as a catalyst in the reduction of alkenes and alkynes with hydrogen. This process involves the formation of … Wikipedia
Chromium carbonyl — Chembox new Name = Chromium carbonyl ImageFile = Cr(CO)6.png ImageSize = 150px ImageName = IUPACName = hexacarbonylchromium(0) OtherNames = chromium carbonyl Section1 = Chembox Identifiers CASNo = 13007 92 6 RTECS = GB5075000 Section2 = Chembox… … Wikipedia
Trost asymmetric allylic alkylation — The Trost asymmetric allylic alkylation or Trost AAA or allylic asymmetric substitution is an organic reaction used in asymmetric synthesis. [Trost, B. M.; Fullerton, T. J. New synthetic reactions. Allylic alkylation. J. Am. Chem. Soc. 1973, 95 … Wikipedia
Tm ligands — The TmMe Ligand was first reported by Reglinski and Spicer ( J. Chem. Soc. Chem. Commun. , 1996, 1975) and was prepared by reacting Methimazole (1 methylimidazole 2 thione) with sodium borohydride in a solvent free melt. Both lithium and… … Wikipedia
Tris(dibenzylideneacetone)dipalladium(0) — Chembox new ImageFile = Pd2(dba)3.png ImageSize = ImageFile1 = Tris(dibenzylideneacetone)dipalladium(0) 3D balls.png IUPACName = Tris(dibenzylideneacetone)dipalladium OtherNames = Pd2(dba)3 Section1 = Chembox Identifiers CASNo = 51364 51 3… … Wikipedia
