The complex [(iPrIm)Ag(NO3)]4 (iPrIm = N,N′-bis(isopropyl)imidazol-2-ylidene) was obtained by reacting Ag(cod)NO3 with [(iPrIm)AgCl]2 in CH2Cl2. The solid-state structure reveals that the complex is composed of a tetrameric core with two different ligands coordinated in both terminal and bridging mode, giving rise to a final formulation better described as [Ag4(iPrIm)2(μ-iPrIm)2(ONO2)2(μ,κO-ONO2)2]. DFT calculations found that the tetramer can exist in two almost isoenergetic isomers, one corresponding to the crystallographic structure and one with terminal-only carbene ligands. Conversely, with halide, only one isomer can be formed.

Tetrameric silver(I) complex with bridging N-heterocyclic carbene ligands: [(iPr Im)Ag(NO3)]4 / R. Della Pergola, M. Bruschi, A. Sironi, V. Colombo, A. Sironi. - In: ORGANOMETALLICS. - ISSN 0276-7333. - 33:19(2014), pp. 5610-5613. [10.1021/om500733f]

Tetrameric silver(I) complex with bridging N-heterocyclic carbene ligands: [(iPr Im)Ag(NO3)]4

A. Sironi;V. Colombo;A. Sironi
2014

Abstract

The complex [(iPrIm)Ag(NO3)]4 (iPrIm = N,N′-bis(isopropyl)imidazol-2-ylidene) was obtained by reacting Ag(cod)NO3 with [(iPrIm)AgCl]2 in CH2Cl2. The solid-state structure reveals that the complex is composed of a tetrameric core with two different ligands coordinated in both terminal and bridging mode, giving rise to a final formulation better described as [Ag4(iPrIm)2(μ-iPrIm)2(ONO2)2(μ,κO-ONO2)2]. DFT calculations found that the tetramer can exist in two almost isoenergetic isomers, one corresponding to the crystallographic structure and one with terminal-only carbene ligands. Conversely, with halide, only one isomer can be formed.
Organic Chemistry; Physical and Theoretical Chemistry; Inorganic Chemistry
Settore CHIM/03 - Chimica Generale e Inorganica
Settore CHIM/02 - Chimica Fisica
ORGANOMETALLICS
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/259585
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