Gaois

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  1. SCIENCE|natural and applied sciences|physical sciences|chemistry
    nasc hidrigine Reference Faomhadh an téarma seo mar chuid de Thionscadal Lex
    ga
    Wasserstoffbrückenbindung | Wasserstoff-Brückenbindung | Wasserstoffbrücke | Wasserstoffbindung
    de
    Definition Form der Nebenvalenzbindung ..., die sich zwischen einem Wasserstoff-Atom, das kovalent an ein Atom eines elektronegativen Elements ... gebunden ist, und dem einsamen Elektronenpaar eines anderen elektronegativen Atoms ... ausbildet Reference "Thieme RÖMPP Online, Eintrag zu ""Wasserstoff-Brückenbindung"", Thieme, 2010, http://www.roempp.com/prod/ (26.08.2010)"
    hydrogen bond | hydrogen bridge | bridge bond
    en
    Definition a form of association between an electronegative atom and a hydrogen atom attached to a second, relatively electronegative atom. It is best considered as an electrostatic interaction, heightened by the small size of hydrogen, which permits proximity of the interacting dipoles or charges. Both electronegative atoms are usually (but not necessarily) from the first row of the Periodic Table, i.e. N, O or F. Hydrogen bonds may be inter-molecular or intramolecular. With a few exceptions, usually involving fluorine, the associated energies are less than 20 - 25 kJ mol −1 (5 - 6 kcal mol −1). Reference "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 http://goldbook.iupac.org/H02899.html [7.12.2009]"
    liaison hydrogène | liaison pont hydrogène | pont hydrogène
    fr
    Definition force d'origine electrostatique intermediaire entre la liaison ionique et la force de Van der Waals Reference Duval,Dic.chimie