Special Issue "N-Heterocyclic Carbene Metal Complexes: From Design to Applications"

A special issue of Inorganics (ISSN 2304-6740). This special issue belongs to the section "Organometallic Chemistry".

Deadline for manuscript submissions: 31 December 2017

Special Issue Editor

Guest Editor
Dr. Hani Amouri

CNRS Research Director, Sorbonne Universités, UPMC Universités Paris 06, and CNRS, IPCM, UMR 8232, 4 place Jussieu, 75252 Paris Cedex 05, France
Website | E-Mail
Interests: N-heterocyclic carbene metal complexes; coordination chemistry; luminescent properties; organometallics and catalysis; structural aspects in N-heterocyclic carbene metal complexes; metallodrugs

Special Issue Information

Dear Colleagues,

N-Heterocyclic Carbenes (NHCs) have witnessed tremendous growth over the last quarter century, since the report by Arduengo and coworkers, in 1991, on the isolation of the first stable free carbene. However, the synthesis of the first (NHC)-metal complexes was reported back in 1968 by Ofele and Wanzlick. The ubiquitous nature of these carbene ligands allowed them to become privileged ligands in the area of organometallics and catalysis. More recently, the chemistry of metallo-carbenes has started gain interest from other fields by acting as metallodrugs, in metallosupramolecular chemistry and also in the area of photoluminescence. Indeed, due to their strong σ-donor, a novel class of stable luminescent materials with useful properties was obtained. This Special Issue aims to highlight the structural and chemical diversity of N-heterocyclic carbene metal complexes, as well as their broad fields of application.

Dr. Hani Amouri
Guest Editor

Manuscript Submission Information

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Keywords

  • N-heterocyclic carbene metal complexes
  • coordination chemistry
  • luminescent properties
  • organometallics and catalysis
  • structural aspects in N-heterocyclic carbene metal complexes
  • metallodrugs

Published Papers (2 papers)

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Research

Open AccessArticle N-Heterocyclic Carbene Coinage Metal Complexes Containing Naphthalimide Chromophore: Design, Structure, and Photophysical Properties
Inorganics 2017, 5(3), 58; doi:10.3390/inorganics5030058
Received: 10 July 2017 / Revised: 21 July 2017 / Accepted: 25 July 2017 / Published: 24 August 2017
PDF Full-text (3318 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A series of novel N-heterocyclic carbene coinage metal complexes containing a naphthalimide (NI) chromophore has been prepared and fully characterized. Two types of molecules are described those where the NI unit is directly attached to the carbene unit with the general formulae
[...] Read more.
A series of novel N-heterocyclic carbene coinage metal complexes containing a naphthalimide (NI) chromophore has been prepared and fully characterized. Two types of molecules are described those where the NI unit is directly attached to the carbene unit with the general formulae [(L1)–M–X], M = Cu, X = Cl (1a); M = Ag, X = I (1b) and M = Au, X = Cl, (1c). While in the second family, a π-extended carbene ligand precursor L2–H+I (3) was prepared where the NI unit is distant from the imidazole unit via a phenyl-alkyne bridge. Only two N-heterocyclic carbene metal complexes were prepared [(L2)–M–Cl], M = Cu (2a) and M = Au (2c). The related silver carbene compound could not be isolated. The molecular structure of the carbene complex 1c was determined and confirmed the formation of the target compound. Interestingly, the structure shows the presence of an aurophilic interaction Au···Au at 3.407 Å between two individual molecules. The photophysical properties of the compounds were investigated in solution at room temperature. Preliminary results suggested that all compounds are luminescent and act as blue emitters (420–451 nm). These transition emissions can be attributed to the intraligand origin of the NI chromphore. Moreover, the carbene complexes featuring L2 ligand with π-extended system were found to be more luminescent. Full article
(This article belongs to the Special Issue N-Heterocyclic Carbene Metal Complexes: From Design to Applications)
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Open AccessArticle Computational Studies on the Selective Polymerization of Lactide Catalyzed by Bifunctional Yttrium NHC Catalyst
Inorganics 2017, 5(3), 46; doi:10.3390/inorganics5030046
Received: 20 June 2017 / Revised: 13 July 2017 / Accepted: 13 July 2017 / Published: 20 July 2017
PDF Full-text (2092 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
A theoretical investigation of the ring-opening polymerization (ROP) mechanism of rac-lactide (LA) with an yttrium complex featuring a N-heterocyclic carbine (NHC) tethered moiety is reported. It was found that the carbonyl of lactide is attacked by N(SiMe3)2 group
[...] Read more.
A theoretical investigation of the ring-opening polymerization (ROP) mechanism of rac-lactide (LA) with an yttrium complex featuring a N-heterocyclic carbine (NHC) tethered moiety is reported. It was found that the carbonyl of lactide is attacked by N(SiMe3)2 group rather than NHC species at the chain initiation step. The polymerization selectivity was further investigated via two consecutive insertions of lactide monomer molecules. The insertion of the second monomer in different assembly modes indicated that the steric interactions between the last enchained monomer unit and the incoming monomer together with the repulsion between the incoming monomer and the ligand framework are the primary factors determining the stereoselectivity. The interaction energy between the monomer and the metal center could also play an important role in the stereocontrol. Full article
(This article belongs to the Special Issue N-Heterocyclic Carbene Metal Complexes: From Design to Applications)
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