Synthesis, structures and photoluminescence properties of silver complexes of cyclic (alkyl)(amino)carbenes

Alexander S. Romanov; Manfred Bochmann

doi:10.1016/j.jorganchem.2017.02.045

Synthesis, structures and photoluminescence properties of silver complexes of cyclic (alkyl)(amino)carbenes

Alexander S. Romanov, Manfred Bochmann

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Abstract

Silver complexes of cyclic (alkyl)(amino)carbenes (CAACs), (^RL)_nAgX (n = 1, X = Cl, Br, I; n = 2, X = OTf; R = Me₂, Et₂, or adamantyl) are accessible in high yields by reacting free carbenes with silver salts. The smaller carbene ligand ^Me2L leads to the formation of a mixture of neutral (^Me2L)AgCl and cationic [(^Me2L)₂Ag]⁺ products. The transmetallation of (^AdL)AgCl with copper and gold halides gives the corresponding copper and gold compounds (^AdL)MCl (M = Cu and Au) in a clean and quantitative reaction. Whereas (^Me2L)AgCl is monomeric in the solid state, (^Et2L)AgCl crystallizes as a Cl-bridged dimer. None of the compounds show metal-metal interactions. The complexes show blue photoluminescence, which consists of a fluorescence component with a lifetime of several nanoseconds, as well as a long-lived emission in the microsecond regime.

Original language	English
Pages (from-to)	114-120
Number of pages	7
Journal	Journal of Organometallic Chemistry
Volume	847
Early online date	1 Mar 2017
DOIs	https://doi.org/10.1016/j.jorganchem.2017.02.045
Publication status	Published - 1 Oct 2017

Keywords

Silver complex
Photoluminescence
Carbene
Transmetallation
Crystal structure

Access to Document

10.1016/j.jorganchem.2017.02.045

Accepted manuscriptAccepted author manuscript, 1.05 MBLicence: CC BY-NC-ND

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Accepted author manuscript, 651 KB
Licence: CC BY-NC-ND
Embargo ends: 31/12/99

Cite this

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title = "Synthesis, structures and photoluminescence properties of silver complexes of cyclic (alkyl)(amino)carbenes",

abstract = "Silver complexes of cyclic (alkyl)(amino)carbenes (CAACs), (RL)nAgX (n = 1, X = Cl, Br, I; n = 2, X = OTf; R = Me2, Et2, or adamantyl) are accessible in high yields by reacting free carbenes with silver salts. The smaller carbene ligand Me2L leads to the formation of a mixture of neutral (Me2L)AgCl and cationic [(Me2L)2Ag]+ products. The transmetallation of (AdL)AgCl with copper and gold halides gives the corresponding copper and gold compounds (AdL)MCl (M = Cu and Au) in a clean and quantitative reaction. Whereas (Me2L)AgCl is monomeric in the solid state, (Et2L)AgCl crystallizes as a Cl-bridged dimer. None of the compounds show metal-metal interactions. The complexes show blue photoluminescence, which consists of a fluorescence component with a lifetime of several nanoseconds, as well as a long-lived emission in the microsecond regime.",

keywords = "Silver complex, Photoluminescence, Carbene, Transmetallation, Crystal structure",

author = "Romanov, {Alexander S.} and Manfred Bochmann",

year = "2017",

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TY - JOUR

T1 - Synthesis, structures and photoluminescence properties of silver complexes of cyclic (alkyl)(amino)carbenes

AU - Romanov, Alexander S.

AU - Bochmann, Manfred

PY - 2017/10/1

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N2 - Silver complexes of cyclic (alkyl)(amino)carbenes (CAACs), (RL)nAgX (n = 1, X = Cl, Br, I; n = 2, X = OTf; R = Me2, Et2, or adamantyl) are accessible in high yields by reacting free carbenes with silver salts. The smaller carbene ligand Me2L leads to the formation of a mixture of neutral (Me2L)AgCl and cationic [(Me2L)2Ag]+ products. The transmetallation of (AdL)AgCl with copper and gold halides gives the corresponding copper and gold compounds (AdL)MCl (M = Cu and Au) in a clean and quantitative reaction. Whereas (Me2L)AgCl is monomeric in the solid state, (Et2L)AgCl crystallizes as a Cl-bridged dimer. None of the compounds show metal-metal interactions. The complexes show blue photoluminescence, which consists of a fluorescence component with a lifetime of several nanoseconds, as well as a long-lived emission in the microsecond regime.

AB - Silver complexes of cyclic (alkyl)(amino)carbenes (CAACs), (RL)nAgX (n = 1, X = Cl, Br, I; n = 2, X = OTf; R = Me2, Et2, or adamantyl) are accessible in high yields by reacting free carbenes with silver salts. The smaller carbene ligand Me2L leads to the formation of a mixture of neutral (Me2L)AgCl and cationic [(Me2L)2Ag]+ products. The transmetallation of (AdL)AgCl with copper and gold halides gives the corresponding copper and gold compounds (AdL)MCl (M = Cu and Au) in a clean and quantitative reaction. Whereas (Me2L)AgCl is monomeric in the solid state, (Et2L)AgCl crystallizes as a Cl-bridged dimer. None of the compounds show metal-metal interactions. The complexes show blue photoluminescence, which consists of a fluorescence component with a lifetime of several nanoseconds, as well as a long-lived emission in the microsecond regime.

KW - Silver complex

KW - Photoluminescence

KW - Carbene

KW - Transmetallation

KW - Crystal structure

U2 - 10.1016/j.jorganchem.2017.02.045

DO - 10.1016/j.jorganchem.2017.02.045

M3 - Article

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SP - 114

EP - 120

JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

ER -