Origin of the Bürgi-Dunitz Angle

The Bürgi-Dunitz (BD) angle plays a pivotal role in organic chemistry to rationalize the nucleophilic addition to carbonyl groups. Yet, the origin of the obtuse trajectory of the nucleophile remains incompletely understood. Herein, we quantify the importance of the underlying physical factors quantum chemically. The obtuse BD angle appears to originate from the concerted action of a reduced Pauli repulsion between the nucleophile HOMO and carbonyl π bond, a more stabilizing HOMO-π*-LUMO(C=O) interaction, as well as a more favorable electrostatic attraction.

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Bibliographic Details
Main Authors: Rodríguez, Humberto A., Bickelhaupt, F. Matthias, Fernández, Israel
Other Authors: Ministerio de Ciencia e Innovación (España)
Format: artículo biblioteca
Language:English
Published: John Wiley & Sons 2023-06-12
Subjects:Bürgi-Dunitz angle, nucleophilic addition, carbonyl, Pauli repulsion, density functional calculations, Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss,
Online Access:http://hdl.handle.net/10261/341977
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