Introducing Tetrel Zintl Ions to N-Heterocyclic Carbenes - Synthesis of Coinage Metal NHC Complexes of [Ge9{Si(SiMe3)3}3]-

2016 ◽  
Vol 2016 (17) ◽  
pp. 2688-2691 ◽  
Author(s):  
Felix S. Geitner ◽  
Thomas F. Fässler
Keyword(s):  
Heterocyclic Carbenes ◽  
Coinage Metal ◽  
Zintl Ions

scholarly journals N-Heterocyclic carbenes on close-packed coinage metal surfaces: bis-carbene metal adatom bonding scheme of monolayer films on Au, Ag and Cu

2017 ◽  
Vol 8 (12) ◽  
pp. 8301-8308 ◽  
Author(s):  
Li Jiang ◽  
Bodong Zhang ◽  
Guillaume Médard ◽  
Ari Paavo Seitsonen ◽  
Felix Haag ◽  
...  
Keyword(s):  
Metal Complexes ◽  
Metal Surfaces ◽  
Heterocyclic Carbenes ◽  
Solid Surfaces ◽  
Monolayer Films ◽  
Coinage Metal ◽  
Bonding Scheme ◽  
Group 11 Metals

N-Heterocyclic carbenes wet the solid surfaces of group 11 metals with energetically favourable electron donating biscarbene metal complexes.

Non-covalent interactions in coinage metal complexes of 1,2,4-triazole-based N-heterocyclic carbenes

2014 ◽  
Vol 43 (41) ◽  
pp. 15465-15474 ◽  
Author(s):  
Jan Turek ◽  
Illia Panov ◽  
Petr Švec ◽  
Zdeňka Růžičková ◽  
Aleš Růžička
Keyword(s):  
Metal Complexes ◽  
Heterocyclic Carbenes ◽  
Coinage Metal ◽  
Complete Series ◽  
Non Covalent Interactions ◽  
Covalent Interactions

Non-covalent interactions were revealed in the complete series of coinage metal complexes of the type (NHC)MX (M = Cu, Ag, Au; X = Cl, Br, I) bearing 1,2,4-triazole based NHCs.

scholarly journals Alkynyl-functionalized gold NHC complexes and their coinage metal clusters

2015 ◽  
Vol 44 (30) ◽  
pp. 13662-13670 ◽  
Author(s):  
Claude Kiefer ◽  
Sebastian Bestgen ◽  
Michael T. Gamer ◽  
Sergei Lebedkin ◽  
Manfred M. Kappes ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metal Clusters ◽  
Heterocyclic Carbenes ◽  
Coinage Metal

Phenylpropynyl-functionalized N-heterocyclic carbenes as ligands for the synthesis of heterometallic hexanuclear coinagemetal clusters which exhibit mixed metallophillic interactions and intense white photoluminescence at low temperature.

scholarly journals Synthesis and Electrocatalytic HER Studies of Carbene-Ligated Cu3-xP Nanocrystals

2020 ◽  
Author(s):  
Bryce A. Tappan ◽  
Keying Chen ◽  
Haipeng Lu ◽  
Shaama Mallikarjun Sharada ◽  
Richard Brutchey
Keyword(s):  
Electrostatic Interactions ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Catalytic Performance ◽  
Heterocyclic Carbenes ◽  
Superior Performance ◽  
Coinage Metal ◽  
Metal Nanocrystals ◽  
General Ability ◽  
Copper Phosphide

<i>N</i>-heterocyclic carbenes (NHCs) are an important class of ligands capable of making strong carbon-metal bonds. Recently, there has been a growing interest in the study of carbene-ligated nanocrystals, primarily coinage metal nanocrystals, which have found applications as catalysts for numerous reactions. The general ability of NHC ligands to positively affect the catalytic properties of other types of nanocrystal catalysts remains unknown. Herein, we present the first carbene-stabilized Cu<sub>3–<i>x</i></sub>P nanocrystals. Inquiries into the mechanism of formation of NHC-ligated Cu<sub>3-<i>x</i></sub>P nanocrystals suggest that crystalline Cu<sub>3–<i>x</i></sub>P forms directly as a result of a high-temperature metathesis reaction between a tris(trimethylsilyl)phosphine precursor and an NHC-CuBr precursor, the latter of which behaves as a source of both carbene ligand and Cu<sup>+</sup>. To study the effect of the NHC surface ligands on catalytic performance, we tested the electrocatalytic hydrogen evolving ability of the NHC-ligated Cu<sub>3–<i>x</i></sub>P nanocrystals and found they possess superior activity to analogous oleylamine-ligated Cu<sub>3–<i>x</i></sub>P nanocrystals. Density functional theory calculations suggest that the NHC ligands minimize unfavorable electrostatic interactions between the copper phosphide surface and H<sup>+</sup> during the first step of the hydrogen evolution reaction, which likely contributes to the superior performance of NHC-ligated Cu<sub>3–<i>x</i></sub>P catalysts as compared to oleylamine-ligated Cu<sub>3–<i>x</i></sub>P catalysts.

scholarly journals Coinage metal complexes of selenoureas derived from N-heterocyclic carbenes

2018 ◽  
Vol 47 (31) ◽  
pp. 10671-10684 ◽  
Author(s):  
Fady Nahra ◽  
Kristof Van Hecke ◽  
Alan R. Kennedy ◽  
David J. Nelson
Keyword(s):  
Coordination Chemistry ◽  
Metal Complexes ◽  
Heterocyclic Carbenes ◽  
Coinage Metal

The coordination chemistry of selenoureas derived from N-heterocyclic carbenes with copper and silver is explored, and compared to previous work with gold.

A comparison of donor–acceptor interactions of N-heterocyclic carbenes and sulfonium ylides in coordination with coinage metal ions

Polyhedron ◽  
2019 ◽  
Vol 157 ◽  
pp. 208-218 ◽  
Author(s):  
Asieh Sedghi ◽  
Mehdi Bayat ◽  
Seyyed Javad Sabounchei ◽  
Mitra Khodabandehloo
Keyword(s):  
Metal Ions ◽  
Heterocyclic Carbenes ◽  
Coinage Metal ◽  
Donor Acceptor ◽  
Sulfonium Ylides

scholarly journals Synthesis and Electrocatalytic HER Studies of Carbene-Ligated Cu3-xP Nanocrystals

2020 ◽  
Author(s):  
Bryce A. Tappan ◽  
Keying Chen ◽  
Haipeng Lu ◽  
Shaama Mallikarjun Sharada ◽  
Richard Brutchey
Keyword(s):  
Electrostatic Interactions ◽  
Density Functional ◽  
Density Functional Theory Calculations ◽  
Catalytic Performance ◽  
Heterocyclic Carbenes ◽  
Superior Performance ◽  
Coinage Metal ◽  
Metal Nanocrystals ◽  
General Ability ◽  
Copper Phosphide

<i>N</i>-heterocyclic carbenes (NHCs) are an important class of ligands capable of making strong carbon-metal bonds. Recently, there has been a growing interest in the study of carbene-ligated nanocrystals, primarily coinage metal nanocrystals, which have found applications as catalysts for numerous reactions. The general ability of NHC ligands to positively affect the catalytic properties of other types of nanocrystal catalysts remains unknown. Herein, we present the first carbene-stabilized Cu<sub>3–<i>x</i></sub>P nanocrystals. Inquiries into the mechanism of formation of NHC-ligated Cu<sub>3-<i>x</i></sub>P nanocrystals suggest that crystalline Cu<sub>3–<i>x</i></sub>P forms directly as a result of a high-temperature metathesis reaction between a tris(trimethylsilyl)phosphine precursor and an NHC-CuBr precursor, the latter of which behaves as a source of both carbene ligand and Cu<sup>+</sup>. To study the effect of the NHC surface ligands on catalytic performance, we tested the electrocatalytic hydrogen evolving ability of the NHC-ligated Cu<sub>3–<i>x</i></sub>P nanocrystals and found they possess superior activity to analogous oleylamine-ligated Cu<sub>3–<i>x</i></sub>P nanocrystals. Density functional theory calculations suggest that the NHC ligands minimize unfavorable electrostatic interactions between the copper phosphide surface and H<sup>+</sup> during the first step of the hydrogen evolution reaction, which likely contributes to the superior performance of NHC-ligated Cu<sub>3–<i>x</i></sub>P catalysts as compared to oleylamine-ligated Cu<sub>3–<i>x</i></sub>P catalysts.

scholarly journals Heterobimetallic Coinage Metal‐Ruthenium Complexes Supported by Anionic N‐Heterocyclic Carbenes

2021 ◽  
Author(s):  
Matthias Tamm ◽  
Sebastian Planer ◽  
Jenni Frosch ◽  
Marvin Koneczny ◽  
Karol Grela ◽  
...  
Keyword(s):  
Ruthenium Complexes ◽  
Heterocyclic Carbenes ◽  
Coinage Metal

Synthesis and characterization of N-heterocyclic carbene–M⋯OEt2 complexes (M = Cu, Ag, Au). Analysis of solvated auxiliary-ligand free [(NHC)M]+ species

2021 ◽  
Author(s):  
Alvaro Muñoz-Castro ◽  
Guocang Wang ◽  
Tharun Teja Ponduru ◽  
H. V. Rasika Dias
Keyword(s):  
Computational Analysis ◽  
Heterocyclic Carbenes ◽  
Synthesis And Characterization ◽  
Auxiliary Ligand ◽  
Coinage Metal ◽  
Ligand Free

We report the synthesis, characterization and computational analysis of coinage metal-ether and related –OH2 complexes supported by N-heterocyclic carbenes (NHC), SIPr and Et2CAAC.

Coinage Metal Complexes of Bis-Alkynyl-Functionalized N-Heterocyclic Carbenes: Reactivity, Photophysical Properties, and Quantum Chemical Investigations

2017 ◽  
Vol 23 (7) ◽  
pp. 1591-1603 ◽  
Author(s):  
Claude Kiefer ◽  
Sebastian Bestgen ◽  
Michael T. Gamer ◽  
Michael Kühn ◽  
Sergei Lebedkin ◽  
...  
Keyword(s):  
Metal Complexes ◽  
Quantum Chemical ◽  
Photophysical Properties ◽  
Heterocyclic Carbenes ◽  
Coinage Metal
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