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Updated: Apr 19, 2026

Characterizing Lewis Pairs Using Titration Coupled with In Situ Infrared Spectroscopy
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易斯基度的尺度向以C为中心的易斯酸 (碳酸盐) 方向

Herbert Mayr1, Johannes Ammer, Mahiuddin Baidya

  • 1Department Chemie, Ludwig-Maximilians-Universität München , Butenandtstraße 5-13, Haus F, 81377 München, Germany.

Journal of the American Chemical Society
|January 3, 2015
PubMed
概括

这项研究量化了化离子的易斯酸度和各种的易斯度,建立了反应性尺度. 它揭示了反应性,易斯酸度和计算的甲基离子亲和力之间的线性相关性,定义了速率平衡关系的边界.

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Lewis Acids and Bases02:33

Lewis Acids and Bases

In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond.
A coordinate covalent bond (or dative bond) occurs when one of the atoms in the bond provides both bonding electrons. For example, a coordinate covalent bond occurs when a water molecule combines with a hydrogen ion to form a hydronium ion. A coordinate covalent bond also results when...
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This lesson delves into Lewis acids and bases in the context of the octet rule for electron-deficient compounds. Here, the concept is discussed, emphasizing the group 13 elements like boron or aluminium. Since group 13 elements possess three valence electrons, they form trivalent compounds with a sextet of electrons and a vacant orbital for the central atom. Consequently, these electron-deficient compounds accept electrons from other species to complete their octet in a chemical reaction. They...
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Carboxylic acids are the strongest among organic acids, as they readily lose the hydroxyl proton to form a resonance-stabilized carboxylate ion. In comparison, the acid derivatives lack acidic hydrogens directly attached to a functional group. In these compounds, the acidic nature arises from their ability to lose α hydrogens, making them weakly acidic.
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Amines can behave as Brønsted–Lowry bases by accepting a proton from the acid to form corresponding conjugate acids. Due to a lone pair of nonbonding electrons, aliphatic amines can also act as Lewis bases by forming a covalent bond with an electrophile.
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