acetylenic bonds

ацетиленова връзка

English-Bulgarian polytechnical dictionary . 2013.

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  • acetylene — acetylenic /euh set l en ik/, adj. /euh set l een , in/, n. Chem. a colorless gas, C2H2, having an etherlike odor, produced usually by the action of water on calcium carbide or by pyrolysis of natural gas: used esp. in metal cutting and welding,… …   Universalium

  • Allotropes of carbon — Eight allotropes of carbon: a) Diamond, b) Graphite, c) Lonsdaleite, d) C60 (Buckminsterfullerene or buckyball), e) C540, f) C70, g) Amorphous carbon, and h) single walled carbon nanotube or buckytube. This is a list of the allotropes of carb …   Wikipedia

  • Bond-dissociation energy — In chemistry, bond dissociation energy (BDE) or D0, is one measure of the bond strength in a chemical bond. It is defined as the standard enthalpy change when a bond is cleaved by homolysis,[1] with reactants and products of the homolysis… …   Wikipedia

  • Alkyne trimerisation — An alkyne trimerisation reaction is a 2+2+2 cyclization reaction in which three alkyne molecules react to form an aromatic compound. The reaction is pseudo pericyclic since it has not been observed to occur without the assistance of metal… …   Wikipedia

  • organosulfur compound — ▪ chemical compound Introduction also spelled  organosulphur compound , also called  organic sulfur compound   a subclass of organic substances that contain sulfur and that are known for their varied occurrence and unusual properties. They are… …   Universalium

  • Jones oxidation — The Jones oxidation is a chemical reaction described as the chromic acid oxidation of primary and secondary alcohols to carboxylic acids and ketones, respectively. [cite journal | author = Bowden, K.; Heilbron, I. M.; Jones, E. R. H | journal = J …   Wikipedia

  • Fullerene — Buckminsterfullerene C60 (left) and carbon nanotubes (right) are two examples of structures in the fullerene family …   Wikipedia

  • Polyyne — The polyynes are a group of organic compounds with alternating single and triple bonds. The simplest example is diacetylene or buta 1,3 diyne, HC≡C C≡CH. Along with cumulenes, polyynes are distinguished from other organic chains by their rigidity …   Wikipedia

  • Carbon nanotube — Not to be confused with Carbon fiber. Part of a series of articles on Nanomaterials Fullerenes …   Wikipedia

  • steroid — /stear oyd, ster /, Biochem. n. 1. any of a large group of fat soluble organic compounds, as the sterols, bile acids, and sex hormones, most of which have specific physiological action. adj. 2. Also, steroidal /sti royd l, ste /. pertaining to or …   Universalium

  • Ene reaction — The Ene reaction (also known as the Alder ene reaction) is a chemical reaction between an alkene with an allylic hydrogen (the ene) and a compound containing a multiple bond (the enophile), in order to form a new σ bond with migration of the ene… …   Wikipedia

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