Bibliografías temáticas / N-Heterocyclic carbenes (NHC) complexes

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Literatura académica sobre el tema "N-Heterocyclic carbenes (NHC) complexes"

Autor: Grafiati
Publicado: 11 de enero de 2025
Última modificación: 31 de julio de 2025

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Artículos de revistas sobre el tema "N-Heterocyclic carbenes (NHC) complexes"

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Longevial, Jean-François, Mamadou Lo, Aurélien Lebrun, Danielle Laurencin, Sébastien Clément, and Sébastien Richeter. "Molecular complexes and main-chain organometallic polymers based on Janus bis(carbenes) fused to metalloporphyrins." Dalton Transactions 49, no. 21 (2020): 7005–14. http://dx.doi.org/10.1039/d0dt00594k.

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Janus bis(N-heterocyclic carbenes) composed of a porphyrin core with two N-heterocyclic carbene (NHC) heads fused to opposite pyrroles were used as bridging ligands for the preparation of metal complexes.
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Mokfi, Moloud, Jörg Rust, Christian W. Lehmann, and Fabian Mohr. "Facile N9-Alkylation of Xanthine Derivatives and Their Use as Precursors for N-Heterocyclic Carbene Complexes." Molecules 26, no. 12 (2021): 3705. http://dx.doi.org/10.3390/molecules26123705.

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The xanthine-derivatives 1,3,7-trimethylxanthine, 1,3-dimethyl-7-benzylxanthine and 1,3-dimethyl-7-(4-chlorobenzyl)xanthine are readily ethylated at N9 using the cheap alkylating agents ethyl tosylate or diethyl sulfate. The resulting xanthinium tosylate or ethyl sulfate salts can be converted into the corresponding PF6- and chloride salts. The reaction of these xanthinium salts with silver(I) oxide results in the formation of different silver(I) carbene-complexes. In the presence of ammonia, ammine complexes [Ag(NHC)(NH3)]PF6 are formed, whilst with Et2NH, the bis(carbene) salts [Ag(NHC)2]PF6
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Buchspies, Jonathan, Md Mahbubur Rahman, and Michal Szostak. "Suzuki–Miyaura Cross-Coupling of Amides Using Well-Defined, Air- and Moisture-Stable Nickel/NHC (NHC = N-Heterocyclic Carbene) Complexes." Catalysts 10, no. 4 (2020): 372. http://dx.doi.org/10.3390/catal10040372.

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In this Special Issue on N-Heterocyclic Carbenes and Their Complexes in Catalysis, we report the first example of Suzuki–Miyaura cross-coupling of amides catalyzed by well-defined, air- and moisture-stable nickel/NHC (NHC = N-heterocyclic carbene) complexes. The selective amide bond N–C(O) activation is achieved by half-sandwich, cyclopentadienyl [CpNi(NHC)Cl] complexes. The following order of reactivity of NHC ligands has been found: IPr > IMes > IPaul ≈ IPr*. Both the neutral and the cationic complexes are efficient catalysts for the Suzuki–Miyaura cross-coupling of amides. Kinetic stu
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Beig, Nosheen, Varsha Goyal, Raakhi Gupta, and Raj K. Bansal. "N-Heterocyclic Carbenes–CuI Complexes as Catalysts: A Theoretical Insight." Australian Journal of Chemistry 74, no. 7 (2021): 503. http://dx.doi.org/10.1071/ch20332.

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The electronic structures of N-heterocyclic carbenes (NHC) imidazolinylidene, thiazolinylidene, imidazolylidene, thiazolylidene, and 1,2,4-triazolylidene and their complexes with cuprous halides (CuX, X=Cl, Br, I) were investigated theoretically at the B3LYP/def2-SVP level. In contrast to other NHCs, imidazolylidene and 1,2,4-triazolylidene do not dimerize owing to the negligible coefficient of the vacant p-orbital at the carbene centre in their respective LUMOs. This is further supported by their greater thermodynamic and kinetic stabilities revealed by greater activation free energies and sm
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Savka, Roman, Sabine Foro, and Herbert Plenio. "Pentiptycene-based concave NHC–metal complexes." Dalton Transactions 45, no. 27 (2016): 11015–24. http://dx.doi.org/10.1039/c6dt01724j.

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Qie, Boyu, Ziyi Wang, Jingwei Jiang, et al. "Synthesis and characterization of low-dimensional N-heterocyclic carbene lattices." Science 384, no. 6698 (2024): 895–901. http://dx.doi.org/10.1126/science.adm9814.

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The covalent interaction of N-heterocyclic carbenes (NHCs) with transition metal atoms gives rise to distinctive frontier molecular orbitals (FMOs). These emergent electronic states have spurred the widespread adoption of NHC ligands in chemical catalysis and functional materials. Although formation of carbene-metal complexes in self-assembled monolayers on surfaces has been explored, design and electronic structure characterization of extended low-dimensional NHC-metal lattices remains elusive. Here we demonstrate a modular approach to engineering one-dimensional (1D) metal-organic chains and
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Beig, Nosheen, Varsha Goyal, and Raj Kumar Bansal. "Application of N-heterocyclic carbene–Cu(I) complexes as catalysts in organic synthesis: a review." Beilstein Journal of Organic Chemistry 19 (September 20, 2023): 1408–42. http://dx.doi.org/10.3762/bjoc.19.102.

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N-Heterocyclic carbenes (NHCs) are a special type of carbenes in which the carbene carbon atom is part of the nitrogen heterocyclic ring. Due to the simplicity of their synthesis and the modularity of their stereoelectronic properties, NHCs have unquestionably emerged as one of the most fascinating and well-known species in chemical science. The remarkable stability of NHCs can be attributed to both kinetic as well as thermodynamic effects caused by its structural features. NHCs constitute a well-established class of new ligands in organometallic chemistry. Although initially NHCs were regarde
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Nonnenmacher, Michael, Dominik M. Buck, and Doris Kunz. "Experimental and theoretical investigations on the high-electron donor character of pyrido-annelated N-heterocyclic carbenes." Beilstein Journal of Organic Chemistry 12 (August 23, 2016): 1884–96. http://dx.doi.org/10.3762/bjoc.12.178.

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Rh(CO)2Cl(NHC) complexes of dipyrido-annelated N-heterocyclic carbenes were prepared. From the C–H coupling constant of the respective imidazolium salts and the N–C–N angle of the N-heterocyclic carbene (NHC), a weaker σ-donor character than that of typical unsaturated NHCs is expected. However, the IR stretching frequencies of their Rh(CO)2Cl complexes suggest an electron-donor character even stronger than that of saturated NHCs. We ascribe this to the extremely weak π-acceptor character of the dipyrido-annelated NHCs caused by the conjugated 14 πe− system that thus allows for an enhanced Rh–
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Ali, Hanan El-Sharkawy. "Bis-carbene metallic compounds: synthesis of imidazoline derivatives via cycloaddition reaction of isocyanides based on amidines." Journal of Scientific and Innovative Research 6, no. 2 (2017): 50–54. http://dx.doi.org/10.31254/jsir.2017.6202.

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In an effort to develop new classes of NHC (N-heterocyclic carbenes) complexes, two imidazoline-anchored ligand systems have been synthesized. The process is superior owing to two approaches: (i) a new synthesized phase transfer catalyst, namely, 1,1'-benzene-1,4-diyldipyridinium dibromide (BDPDB) used to catalyze the phase-transfer Hoffmann reaction of two structurally varied amines, dodecylamine and 1-amino-9,10- anthraquinone. The reaction successfully gave the corresponding isocyanides that display the highest reactivity in reasonable to good yields. (ii) A cycloaddition-rearrangement reac
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Leitão, Maria Inês P. S., Giulia Francescato, Clara S. B. Gomes, and Ana Petronilho. "Synthesis of Platinum(II) N-Heterocyclic Carbenes Based on Adenosine." Molecules 26, no. 17 (2021): 5384. http://dx.doi.org/10.3390/molecules26175384.

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Organometallic derivatization of nucleosides is a highly promising strategy for the improvement of the therapeutic profile of nucleosides. Herein, a methodology for the synthesis of metalated adenosine with a deprotected ribose moiety is described. Platinum(II) N-heterocyclic carbene complexes based on adenosine were synthesized, namely N-heterocyclic carbenes bearing a protected and unprotected ribose ring. Reaction of the 8-bromo-2′,3′,5′-tri-O-acetyladenosine with Pt(PPh3)4 by C8−Br oxidative addition yielded complex 1, with a PtII centre bonded to C-8 and an unprotonated N7. Complex 1 reac
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Tesis sobre el tema "N-Heterocyclic carbenes (NHC) complexes"

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Durmus, Semih. "Silver(I) and Gold(I) N-Heterocyclic Carbene Complexes." University of Akron / OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=akron1165247084.

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McMullon, Max William. "Exploiting anionically-tethered N-heterocyclic carbene complexes for small molecule activation." Thesis, University of Edinburgh, 2018. http://hdl.handle.net/1842/31079.

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N-heterocyclic carbenes (NHCs) can be used as ligands for organometallics complexes, which can then facilitate numerous catalytic applications, such as, C-H activation, small molecule activation and numerous materials applications. The use of anionically-tethered NHCs for usage with electropositive metals has been pioneered by the Arnold group within the last decade. This thesis describes the synthesis of both aryloxide- and amide-tethered NHC organometallic complexes of s-, p-, d- and f-block metals to provide a platform for small molecule activation. Once synthesised, the reactivity of some
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Ellul, Charles. "Trimetallic N-heterocyclic carbene complexes." Thesis, University of Bath, 2011. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538279.

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Gauthier, Étienne. "Chiral complexes based on helicenic N-heterocyclic carbenes : synthesis, structure, photophysical and chiroptical properties." Thesis, Rennes 1, 2020. http://www.theses.fr/2020REN1S083.

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Dans le cadre de ma thèse, de nouveaux complexes de métaux de transitions (rhénium, iridium, cuivre, or) chiraux possédant des ligands NHC-hélicéniques ont été synthétisés et les propriétés chiroptiques et photophysiques ont été étudiées. Le premier sujet d’étude s’est focalisé sur l’étude de complexes de rhénium(I) cyclométallés par des ligands hélicéniques-NHC de type (N^C:) émettant de la phosphorescence circulairement polarisée. Une influence du design du ligand, des ligands ancillaires et de la géométrie des complexes sur les propriétés chiroptiques et photophysiques a été observée. Le de
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Marr, Isobel Helen. "Synthesis and reactivity of scandium N-heterocyclic carbene complexes." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/17970.

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Chapter one introduces N-heterocyclic carbenes (NHCs) and discusses their use as ligands for rare earth metal complexes, with particular emphasis upon compounds synthesised from 2009 until the present day. Chapter two details the synthesis and characterisation of the homoleptic scandium-NHC complex [Sc(L)3] (L = [OCMe2CH2(1-C{NCHCHNiPr})]). Reactions of [Sc(L)3] with boranes, CO2 and CS2 are described which exploit the relative lability of the Sc–Ccarbene bond and allow formation of [Sc(L)2(OCMe2CH2(1-B'C{NCHCHNiPr}))] (B' = 9-BBN, BPh3, B(C6F5)3, BH3), [Sc(OCMe2CH2(1-O2CC{NCHCHNiPr})3]n, [Sc(
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Li, Kai, and 李凯. "Photoluminescent organoplatinum (II) complexes containing N-heterocyclic carbene (NHC) ligands." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hub.hku.hk/bib/B50533915.

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The syntheses, structures, photophysical properties and applications of three types of photoluminescent organoplatinum(II) complexes containing N-heterocyclic carbene (NHC) ligands are described. The tetradentate dianionic bis(phenolate-NHC) type ligands provide a superior scaffold for constructing thermally stable and efficient deep-blue phosphorescent Pt(II) complexes with λmax of ~440-460 nm and solid-state emission quantum yields of ~30%. Highly efficient blue OLEDs with CIEx, y of (0.19, 0.21) were fabricated based on these emitters with maximum brightness, peak current efficiency and
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Santoro, Orlando. "Copper(I)-N-heterocyclic carbene (NHC) complexes : synthesis, characterisation and applications in synthesis and catalysis." Thesis, University of St Andrews, 2016. http://hdl.handle.net/10023/8409.

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The work described herein focuses on the synthesis and characterisation of copper(I) complexes bearing N-heterocyclic carbene (NHC) ligands, their use in catalysis as well as organometallic synthesis and related reaction mechanisms. Two classes of complexes were considered: neutral NHC-Cu(I) species and their cationic analogues. Concerning the former, initial efforts were focused on the development of a general and straightforward synthetic methodology towards complexes of the type [Cu(X)(NHC)] (X = Cl, Br, I). More than 10 NHC-Cu(I) species were synthesised in high yields under mild condition
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Saker, Oliver John. "Mono- and tri-nuclear ruthenium complexes incorporating N-heterocyclic carbene ligands." Thesis, University of Bath, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.512305.

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Fantasia, S. M. "Synthesis and reactivity of Pt(2.) complexes bearing phosphines or N-heterocyclic carbenes (NHC) as ancillary ligands." Doctoral thesis, Università degli Studi di Milano, 2006. http://hdl.handle.net/2434/166365.

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Martin, Thomas Antony. "Unravelling the photochemistry of organometallic N-heterocyclic carbene complexes." Thesis, University of Bath, 2011. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.547630.

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This thesis describes the synthesis, characterisation and reactivity of new manganese and rhenium(I) NHC complexes, which have been investigated both thermally and photochemically and the results contrasted with existing phosphine analogues in the literature. Cp’Mn(CO)2(NHC) (NHC = IEt2Me2 1, IMes 2, IiPr2Me2 3 and IPr 4) were synthesised and investigated by TRIR spectroscopy. Loss of CO was observed after 355 nm irradiation to form agostically stabilised intermediates, which reformed the parent species by recombination with CO on the nanosecond timescale. Loss of NHC was not observed, in cont
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Libros sobre el tema "N-Heterocyclic carbenes (NHC) complexes"

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Fedorkiw, Terry William. Study of new ruthenium and iridium hydride complexes bearing N-heterocyclic carbenes as ligands. National Library of Canada, 2003.

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Fedorkiw, Terry William. Study of new ruthenium and iridium hydride complexes bearing N-heterocyclic carbenes as ligands. 2003.

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Zou, Taotao. Anti-Cancer N-Heterocyclic Carbene Complexes of Gold, Gold and Platinum: Thiol “Switch-on” Fluorescent Probes, Thioredoxin Reductase ... Reticulum Targeting Agents. Springer, 2018.

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Zou, Taotao. Anti-Cancer N-Heterocyclic Carbene Complexes of Gold, Gold and Platinum: Thiol “Switch-on” Fluorescent Probes, Thioredoxin Reductase ... Reticulum Targeting Agents. Springer, 2016.

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Zou, Taotao. Anti-Cancer N-Heterocyclic Carbene Complexes of Gold, Gold and Platinum: Thiol Switch-On Fluorescent Probes, Thioredoxin Reductase Inhibitors and Endoplasmic Reticulum Targeting Agents. Springer London, Limited, 2016.

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Capítulos de libros sobre el tema "N-Heterocyclic carbenes (NHC) complexes"

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Lazreg, Faïma, and Catherine S. J. Cazin. "NHC-Copper Complexes and their Applications." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch08.

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Lazreg, Faïma, and Catherine S. J. Cazin. "Medical Applications of NHC-Gold and -Copper Complexes." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch07.

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Wurm, Thomas, Abdullah Mohamed Asiri, and A. Stephen K. Hashmi. "NHC-Au(I) Complexes: Synthesis, Activation, and Application." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch09.

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Wagers, Patrick O., Kerri L. Shelton, Matthew J. Panzner, Claire A. Tessier, and Wiley J. Youngs. "Synthesis and Medicinal Properties of Silver-NHC Complexes and Imidazolium Salts." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch06.

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Murphy, Luke J., Katherine N. Robertson, Jason D. Masuda, and Jason A. C. Clyburne. "NHC Complexes of Main Group Elements: Novel Structures, Reactivity, and Catalytic Behavior." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch15.

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Dierick, Steve, and István E. Markó. "NHC Platinum(0) Complexes: Unique Catalysts for the Hydrosilylation of Alkenes and Alkynes." In N-Heterocyclic Carbenes. Wiley-VCH Verlag GmbH & Co. KGaA, 2014. http://dx.doi.org/10.1002/9783527671229.ch05.

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Pérez, Pedro J., and M. Mar Díaz-Requejo. "Cu-, Ag-, and Au-NHC Complexes in Catalysis." In N-Heterocyclic Carbenes in Synthesis. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/9783527609451.ch11.

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Nielsen, David J., and Kingsley J. Cavell. "Pd-NHC Complexes as Catalysts in Telomerization and Aryl Amination Reactions." In N-Heterocyclic Carbenes in Synthesis. Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/9783527609451.ch4.

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Hahn, F. Ekkehardt. "Complexes with Protic N-Heterocyclic Carbene (NR,NH-NHC) Ligands." In Advances in Organometallic Chemistry and Catalysis. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118742952.ch9.

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Krylova, Valentina A., Peter I. Djurovich, Brian L. Conley, et al. "Control of Emission Colour with N-Heterocyclic Carbene (NHC) Ligands in Phosphorescent Three-Coordinate Cu(I) Complexes†." In Electrophosphorescent Materials and Devices. Jenny Stanford Publishing, 2023. http://dx.doi.org/10.1201/9781003088721-45.

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Actas de conferencias sobre el tema "N-Heterocyclic carbenes (NHC) complexes"

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Vo-Thanh, Giang, Audrey Aupoix, and Chloée Bournaud. "Asymmetric transfer hydrogenation of aromatic ketones using rhodium complexes of chiral N-heterocyclic carbenes derived from (S)-pyroglutamic acid." In The 17th International Electronic Conference on Synthetic Organic Chemistry. MDPI, 2013. http://dx.doi.org/10.3390/ecsoc-17-a005.

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