oxoniumn.

Brit.

/ɒkˈsəʊnɪəm/, U.S.

/ɑkˈsoʊniəm/

Origin: Formed within English, by compounding. Etymons: oxy- comb. form², -onium comb. form¹.

Etymology: < oxy- comb. form² + -onium comb. form¹.

Chemistry.

The hydroxonium ion, H₃O⁺; any analogue of this in which one or more of the hydrogen atoms are replaced by organic groups. Usually attributive.

ΘΚΠ

the world > matter > chemistry > organic chemistry > organic ions > [noun]

carboxylate1884

sulphonium1894

oxonium1899

hexamethonium1949

lipoate1954

tropylium1954

1899 J. N. Collie & T. Tickle in Jrnl. Chem. Soc. 75 717 If oxygen can replace phosphorus, nitrogen, or sulphur in bases, then these oxygen compounds can be viewed as derivatives of the hypothetical base, oxonium hydroxide, OH₃OH.

1929 R. A. Gortner Outl. Biochem. xxx. 621 The anthocyanin compounds readily add acids to form oxonium salts.

1959 Nomencl. Inorg. Chem. (I.U.P.A.C.) 26 The ion H₃O⁺..is to be known as the oxonium ion when it is believed to have this constitution, as for example in H₃O⁺ClO⁻₄, oxonium perchlorate.

1974 Nature 31 May 474/2 By dynamic reversal of the H₂O binding step before pseudorotation, the two oxygens in the pair of oxoniums could equilibrate with the H₂O oxygens of the medium.

1988 P. W. Kuchel et al. Schaum's Outl. Theory & Probl. Biochem. xv. 420 The sulphonium ion is more stable than the oxonium ion and is highly reactive.

This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022).

单词	oxonium
释义	oxoniumn. Brit. /ɒkˈsəʊnɪəm/, U.S. /ɑkˈsoʊniəm/ Origin: Formed within English, by compounding. Etymons: oxy- comb. form², -onium comb. form¹. Etymology: < oxy- comb. form² + -onium comb. form¹. Chemistry. The hydroxonium ion, H₃O⁺; any analogue of this in which one or more of the hydrogen atoms are replaced by organic groups. Usually attributive. ΘΚΠ the world > matter > chemistry > organic chemistry > organic ions > [noun] carboxylate1884 sulphonium1894 oxonium1899 hexamethonium1949 lipoate1954 tropylium1954 1899 J. N. Collie & T. Tickle in Jrnl. Chem. Soc. 75 717 If oxygen can replace phosphorus, nitrogen, or sulphur in bases, then these oxygen compounds can be viewed as derivatives of the hypothetical base, oxonium hydroxide, OH₃OH. 1929 R. A. Gortner Outl. Biochem. xxx. 621 The anthocyanin compounds readily add acids to form oxonium salts. 1959 Nomencl. Inorg. Chem. (I.U.P.A.C.) 26 The ion H₃O⁺..is to be known as the oxonium ion when it is believed to have this constitution, as for example in H₃O⁺ClO⁻₄, oxonium perchlorate. 1974 Nature 31 May 474/2 By dynamic reversal of the H₂O binding step before pseudorotation, the two oxygens in the pair of oxoniums could equilibrate with the H₂O oxygens of the medium. 1988 P. W. Kuchel et al. Schaum's Outl. Theory & Probl. Biochem. xv. 420 The sulphonium ion is more stable than the oxonium ion and is highly reactive. This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022). < n.1899
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