protonatedadj.
/ˈprəʊtəneɪtᵻd/, U.S. /ˈproʊdəˌneɪdᵻd/ Chemistry.
Having received a proton; bonded to an additional proton. Cf. protonate v.In quot. 1945 used in a slightly different sense, being applied to the two bonds (each with a bridging hydrogen atom) which link the boron atoms in the electron-deficient compound diborane, B2H6.
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the world > matter > chemistry > chemical bonding > [adjective] > of or relating to covalent bonding > of or relating to co-ordinate bonds > of or relating to protonation
protonated1945
protonating1963
1945 K. S. Pitzer in Jrnl. Amer. Chem. Soc. 67 1127/1 Let us call it a proton containing double bond or, shorter, a protonated double bond.
1947 Jrnl. Amer. Chem. Soc. 71 1504/1 The greater acidity of the hydrazinium group in the doubly protonated glycylhydrazide relative to the singly protonated acethydrazide.
1972 F. A. Cotton & G. Wilkinson Adv. Inorg. Chem. (ed. 3) v. 176 Even protonated carbonic acid, or more properly, the trihydroxycarbonium ion, C(OH)3+..has been observed.
1990 Protein Engin. 4 118/2 Glutamine protonates the product directly, with Tyr34 acting as a proton shuttle, abstracting a proton from solvent and regenerating the protonated glutamine amide.
This entry has been updated (OED Third Edition, September 2007; most recently modified version published online March 2022).
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adj.1945