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Main Title: Applications of N-heterocyclic imines in main group chemistry
Author(s): Ochiai, Tatsumi
Franz, Daniel
Inoue, Shigeyoshi
Type: Article
Language Code: en
Abstract: The imidazolin-2-imino group is an N-heterocyclic imino functionality that derives from the class of compounds known as guanidines. The exocyclic nitrogen atom preferably bonds to electrophiles and its electron-donating character is markedly enhanced by efficient delocalization of cationic charge density into the five-membered imidazoline ring. Thus, this imino group is an excellent choice for thermodynamic stabilization of electron-deficient species. Due to the variety of available imidazoline-based precursors to this ligand, its steric demand can be tailored to meet the requirements for kinetic stabilization of otherwise highly reactive species. Consequently, it does not come as a surprise that the imidazolin-2-iminato ligand has found widespread applications in transition-metal chemistry to furnish pincer complexes or "pogo stick" type compounds. In comparison, the field of main-group metal compounds of this ligand is still in its infancy; however, it has received growing attention in recent years. A considerable number of electron-poor main-group element species have been described today which are stabilized by N-heterocyclic iminato ligands. These include low-valent metal cations and species that are marked by formerly unknown bonding modes. In this article we provide an overview on the present chemistry of main-group element compounds of the imidazolin-2-iminato ligand, as well as selected examples for the related imidazolidin-and benzimidazolin-2-imino system.
Issue Date: 2016
Date Available: 24-Oct-2017
DDC Class: 540 Chemie und zugeordnete Wissenschaften
Journal Title: Chemical Society reviews
Publisher: Royal Society of Chemistry
Publisher Place: Cambridge
Volume: 45
Issue: 22
Publisher DOI: 10.1039/c6cs00163g
Page Start: 6327
Page End: 6344
EISSN: 1460-4744
ISSN: 0306-0012
Appears in Collections:FG Anorganische Chemie - Festkörper- und Materialchemie » Publications

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