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{"term":{"metadata":{"id":"04291","doi":"10.1351\/goldbook.O04291","code":"O04291","status":"current","longtitle":"IUPAC Gold Book - onium compounds","title":"onium compounds","contexts":[],"index":null,"version":"2.3.3","lastupdated":"2014-02-24"},"definitions":{"definition":[{"id":"1","text":"Cations (with their counter-ions) derived by addition of a hydron to a mononuclear parent hydride of the nitrogen, chalcogen and halogen families. (H4N+) ammonium (H3O+) oxonium (H2F+) fluoronium (H4P+) phosphonium (H3S+) sulfonium (H2Cl+) chloronium (H4As+) arsonium (H3Se+) selenonium (H2Br+) bromonium (H4Sb+) stibonium (H3Te+) telluronium (H2I+) iodonium (H4Bi+) bismuthonium","contexts":{"in":[],"of":[]},"chemicals":[],"links":[{"type":"internal","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/C00907"},{"type":"internal","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/H02904"},{"type":"goldify","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/C01371"},{"type":"goldify","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/P04405"}],"math":[],"sources":[]},{"id":"2","text":"Derivatives formed by substitution of the above parent ions by univalent groups. The number of substituted hydrogen atoms is, especially in the case of hydrocarbyl substituents, indicated by the adjectives primary, secondary, tertiary or quaternary. E.g. (Cl2F+) dichlorofluoronium, (CH3)2S+H dimethylsulfonium (a secondary sulfonium ion), Cl(CH3)3P+ chlorotrimethylphosphonium, (CH3CH2)4N+ tetraethylammonium (a quaternary ammonium ion).","contexts":{"in":[],"of":[]},"chemicals":[],"links":[{"type":"seealso","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/A00457"},{"type":"seealso","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/H02728"},{"type":"seealso","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/O04378"},{"type":"seealso","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/P04562"},{"type":"seealso","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/Q05003"},{"type":"seealso","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/S06011"},{"type":"seealso","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/S06121"},{"type":"internal","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/H02891"}],"math":[],"sources":[]},{"id":"3","text":"Derivatives formed by substitution of the above parent ions by groups having two or three free valencies on the same atom. Such derivatives are, where possible, designated by a specific class name. E.g. RC≡O+ hydrocarbylidyne oxonium ions, R2C=N+H2X−iminium compounds, RC≡NH+nitrilium ions.","contexts":{"in":[],"of":[]},"chemicals":[],"links":[{"type":"goldify","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/O04378"},{"type":"goldify","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/I02958"},{"type":"goldify","url":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/N04156"}],"math":[],"sources":[]}]},"sources":null,"referencedin":[{"title":0,"url":"https:\/\/zh.wikipedia.org\/w\/index.php?title=鎓化合物&oldid=44436730","source":"wikipedia"}],"links":{"html":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/O04291\/html","json":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/O04291\/json","xml":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/O04291\/xml","plain":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/O04291\/plain","pdf":"http:\/\/dev.goldbook.iupac.org\/terms\/view\/O04291\/pdf","originalpdf":"http:\/\/iupac.org\/goldbook\/O04291.pdf"},"citeas":"IUPAC. Compendium of Chemical Terminology, 2nd ed. (the \"Gold Book\"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http:\/\/goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8. https:\/\/doi.org\/10.1351\/goldbook.","license":"Licensed under Creative Commons Attribution-NoDerivatives (CC-BY-ND) 4.0 International (https:\/\/creativecommons.org\/licenses\/by-nd\/4.0\/)","disclaimer":"The International Union of Pure and Applied Chemistry (IUPAC) is continuously reviewing and, where needed, updating terms in the Compendium of Chemical Terminology (the IUPAC Gold Book). Users of these terms are encouraged to include the version of a term with its use and to check regularly for updates to term definitions that you are using.","accessed":"2021-10-17T03:06:00+00:00"}}