μ3-Chlorido-tris(bis{1-[2-(dimethylamino)ethyl]-3-methylimidazol-2-ylidene}silver(I)) dichloride

Christoph Topf,Sebastian Leitner,Uwe Monkowius

doi:10.1107/s1600536812004473

Christoph Topf, Sebastian Leitner + Show 1 more

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https://doi.org/10.1107/s1600536812004473

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Abstract

In the crystal structure of the title compound, [Ag3Cl(C8H15N3)6]Cl2, the AgI ion, which is located on a twofold rotation axis, exists in a T-shape coordination environment. Two carbene C atoms of the N-heterocyclic carbene (NHC) ligands are bonded tightly forming a slightly bent [Ag(NHC)2]+ cation [C—Ag—C angle = 162.80 (18)°]. Three of these complex cations are further aggregated by one bridging chloride anion, which is lying on a threefold rotoinversion axis and is only loosely binding to the Ag+ ions. The N atom of the amine group is not engaged in any coordinative bond.

Highlights

In the crystal structure of the title compound, [Ag3Cl(C8H15N3)6]Cl2, the AgI ion, which is located on a twofold rotation axis, exists in a T-shape coordination environment
In the course of our studies on gold- and silver-complexes bearing functionalized N-heterocyclic carbenes (NHCs), we became interested in examples with amino groups containing side arms at a nitrogen atom of the NHC ligands (Topf, Hirtenlehner, Fleck et al (2011); Topf, Hirtenlehner & Monkowius (2011); Leitner et al, 2011; Hirtenlehner et al, 2011)
We published the multifarious coordination patterns of such silver complexes (Topf, Hirtenlehner, Zabel et al, 2011): E.g., in the ionic compound [(C8H15N3)2Ag][AgCl2], which is formed from the respective imidazolium chloride and Ag2O in dichloromethane, the ions are aggregated to infinite chains with short silver-silver contacts

Summary

Introduction

H-atom parameters constrained max = 1.28 e Å 3 In the crystal structure of the title compound, [Ag3Cl(C8H15N3)6]Cl2, the AgI ion, which is located on a twofold rotation axis, exists in a T-shape coordination environment. Two carbene C atoms of the N-heterocyclic carbene (NHC) The N atom of the amine group is not engaged in any coordinative bond.

Results

Conclusion