Dinitroxide Carbenes, A New Class of Carbenes with Autoumpolung Character: Preparation in Solution and Stabilization in Transition Metal Complexes

By deprotonation of the nitronylnitrosonium cation 1 the dinitroxide carbene 2 was prepared in solution (see scheme, S=singlet, T=triplet). Carbene 2 is the first example of a new class of carbenes with autoumpolung capability, the electronic structure of which is discussed in terms of configuration...

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Bibliographic Details
Published in:Angewandte Chemie International Edition 2002-01, Vol.41 (2), p.311-314
Main Authors: Weiss, Robert, Kraut, Norbert
Format: Article
Language:English
Subjects:
autoumpolung
carbene ligands
Carbenes
Cations
Electronic structure
palladium
radicals
Stabilization
Transition metals
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Summary:By deprotonation of the nitronylnitrosonium cation 1 the dinitroxide carbene 2 was prepared in solution (see scheme, S=singlet, T=triplet). Carbene 2 is the first example of a new class of carbenes with autoumpolung capability, the electronic structure of which is discussed in terms of configurations 2 a–c. Stable transition metal complexes derived from 2 a were synthesized and structurally characterized.
ISSN:1433-7851
1521-3773
DOI:10.1002/1521-3773(20020118)41:2<311::AID-ANIE311>3.0.CO;2-L