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  • ...then [[pyrolysis]] at 400 to 450 °C in order to remove all non-diamondoid compounds <ref>Diamondoids are thermodynamically very stable and will survive this py * Other diamond-like compounds: [[Boron nitride]]
    8 KB (1,136 words) - 09:07, 20 September 2010
  • Physical properties of chemical compounds which provide evidence of chemical composition include odor, color, volume, *[[Boron nitride]] is structurally [[isoelectronic]] to carbon and takes on similar
    28 KB (3,876 words) - 09:08, 20 September 2010
  • ..., A. A.; Talinli, N.; Akar, A. Ladder type polymers from dihydroxyaromatic compounds and dialdehydes. ''Angew. Makrom. Chem.'' '''1999,''' ''271'' (1), 8-10. IS ...anic and semiorganic [[polymers]] often employ [[silicon]]-[[nitrogen]], [[boron]]-[[nitrogen]], and [[phosphorus]]-[[nitrogen]] monomers. The non-burning c
    17 KB (2,260 words) - 09:10, 20 September 2010
  • ...[[Electrical conductance|conduct]] [[electricity]].<ref name=inzelt/> Such compounds may have metallic conductivity or be [[semiconductor]]s. The biggest advant ...replaced by electron-rich (e.g., [[phosphorus]]) or electron-poor (e.g. [[boron]]) atoms to create [[n-type semiconductor|n-type]] and [[p-type semiconduct
    22 KB (3,022 words) - 09:10, 20 September 2010
  • Under alkaline conditions, [[boron]] compounds, such as [[boric acid]] or [[borax]] causes the polymer to [[cross-link]] f
    6 KB (871 words) - 09:10, 20 September 2010
  • ...e of the [[Periodic Table of the Elements]]. A diagonal line, drawn from [[boron]] (B) to [[polonium]] (Po), separates the metals from the nonmetals. Most e ...e physical and chemical behavior of metallic elements, their intermetallic compounds, and their mixtures, which are called alloys.
    24 KB (3,311 words) - 09:13, 20 September 2010
  • ...s became accessible. Despite all this progress the nature of intermetallic compounds and alloys largely remained a mystery and their study was often empirical. ...structure identical to that of graphite apart from the alternation between boron and nitrogen in each ring. This material is a [[semiconductor]], exemplifyi
    26 KB (4,024 words) - 09:13, 20 September 2010
  • [[Graphite]], hexagonal [[boron nitride]], [[molybdenum disulfide]] and [[tungsten disulfide]] are examples Note that many of the basic chemical compounds used as detergents (example: calcium sulfonate) serve the purpose of the fi
    32 KB (4,626 words) - 09:18, 20 September 2010
  • ...]], ethanolamines, simple and complex glycols, polyglycol ethers and other compounds. It is also a common gas-phase [[disinfectant]] which is widely used in hos ...ular, its propensity to join the addition reactions typical of unsaturated compounds, had long been a matter of debate. Only in 1893, the heterocyclic triangula
    82 KB (11,709 words) - 20:31, 20 September 2010
  • .... Other Elements Isolated with the Aid of Potassium and Sodium: Beryllium, Boron, Silicon and Aluminium |isbn = 0-7661-3872-0}}</ref> The potassium itself had been produced by the [[electrolysis]] of its compounds, a newly-discovered process.
    41 KB (5,890 words) - 20:34, 20 September 2010
  • ...moscorpionate, the organic ligand has four pyrazole groups attached to a [[boron]]. The other three ligands attached to the metal are [[carbonyl]] ([[carbon ...ite journal | doi = 10.1021/ja00960a065 | author = S. Trofimenko | title = Boron-Pyrazole Chemistry | journal = [[J. Am. Chem. Soc.]] | year = 1966 | volume
    9 KB (1,297 words) - 19:14, 21 September 2010
  • ...with [[acetone]]. Acetone and [[acetic anhydride]] upon the addition of [[Boron trifluoride|BF<sub>3</sub>]] catalyst:<ref name = denoon>{{OrgSynth | title
    16 KB (2,268 words) - 19:15, 21 September 2010
  • ...ic acid]] can be used with a non-acidic solvent. [[Lewis acid]]s such as [[boron trifluoride]] etherate and ytterbium triflate have also been known to catal ...nic synthesis]], but none of them are of practical value. Porphyrin-based compounds are of interest in [[molecular electronics]] and supramolecular building bl
    12 KB (1,605 words) - 19:15, 21 September 2010
  • ...s a strong acid. In liquid [[sulfur dioxide]] ({{chem|SO|2}}), [[thionyl]] compounds (supplying {{chem|SO|2+}}) behave as acids, and [[sulfites]] (supplying {{c ...; it was felt that there was something intrinsically acidic about hydrogen compounds, not shared by non-hydrogenic solvonium salts.<ref name=review1940/>
    29 KB (4,415 words) - 19:17, 21 September 2010
  • |+pH in living systems<ref>{{cite book|last=Boron|first=Walter, F.|coauthors=Boulpaep, E.L. |title=Medical Physiology: A Cell ...the ranges are kept in a narrow range, and that free protons are among the compounds with the very smallest mass concentrations.]]
    33 KB (5,044 words) - 19:17, 21 September 2010
  • ...release of [[norepinephrine]]) that directly innervates the muscle. These compounds interact with cell surface [[adrenergic receptors]]. Such stimuli result in !Vasoconstrictor <ref name=boron/>
    11 KB (1,498 words) - 20:28, 21 September 2010
  • Compounds that mediate the above mechanisms may be grouped as [[endogenous]] and [[ex !Vasodilators <ref name=boron/>
    13 KB (1,665 words) - 20:28, 21 September 2010
  • | title=Boron trifluoride etherate on alumuna - a modified Lewis acid reagent. An improve * [http://www.erowid.org/plants/cannabis/cannabis_info2.shtml Erowid] Compounds found in ''Cannabis sativa''
    17 KB (2,198 words) - 21:07, 21 September 2010