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Dissertations / Theses on the topic 'Cyclometallates'

Author: Grafiati

Published: 18 May 2024

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1

Chhetri, Satyadeep Singh. "C (Aryl) - H bond activation : isolation, characterization and reactivity of cyclometallates." Thesis, University of North Bengal, 2012. http://hdl.handle.net/123456789/1471.

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2

Tan, Guiping. "Synthesis of new iridium (iii) and platinum (ii) cyclometallates and theiir application in high-efficiency organic light-emitting devices." HKBU Institutional Repository, 2012. https://repository.hkbu.edu.hk/etd_ra/1418.

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3

Neogi, Debatra Narayan. "Cyclometallated compounds: synthesis, characterization and reactivity." Thesis, University of North Bengal, 2005. http://hdl.handle.net/123456789/746.

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4

Slater, Jonathan. "Cyclometallated nitrogen heterocycles - metallomesogens." Thesis, University of Warwick, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.269196.

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5

de, Geest Duncan J. "Synthesis and study of new cyclometallated complexes." Thesis, University of Canterbury. Chemistry, 1998. http://hdl.handle.net/10092/8523.

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Twenty-nine heteroaromatic ligands, which are potentially capable of forming cyclometallated complexes, have been reacted with palladium and rhodium salts. In addition to a number of mono-cyclometallated complexes, two doubly cyclopalladated complexes have been prepared, as have a number of coordination complexes. Specifically, a number of phenoxy- and phenylthio-substituted pyridines and diazines, four of which could potentially be doubly cyclometallated, have been synthesised, and their coordination and cyclopalladation chemistry investigated. The previously reported reactions of 2-benzoylp

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6

Singh, Shalini. "Luminescent cyclometallated Ir(III) complexes : synthesis, characterisation and applications." Thesis, University of Leicester, 2011. http://hdl.handle.net/2381/9067.

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A range of luminescent Ir(III) complexes [Ir(C^N)2(X^Y)]n+ (n = 0, 1) containing different cyclometallated (C^N) and ancillary (X^Y) ligands has been synthesised. All new compounds were fully characterised by 1H and 13C NMR spectroscopy, mass spectrometry and elemental analyses and several compounds have been structurally characterised by X-ray crystallography. The photophysical and electrochemical properties of the complexes were also studied. Chapter one provides an introduction to luminescent transition metal complexes, in particular Ru(II) and Ir(III) complexes and gives an overview of the

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7

Crosby, Sarah H. "Cyclometallated complexes of platinum : C-H activation, oxidation and reduction." Thesis, University of Warwick, 2011. http://wrap.warwick.ac.uk/55449/.

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Within this thesis, research related to the synthesis of Pt(II) and Pt(IV) cyclometallated complexes involving both aryl and alkyl C-H activation is discussed. The introduction reviews literature relevant to C-H activation, cyclometallation and reductive elimination, both historic and current. Four pyridine based pro-ligands, all with a 4-fluorophenyl substituent and a varying alkyl substituent, were synthesised in order to study both aryl and alkyl C-H activation. Initial reactions with K2PtCl4 led to the cyclometallation of the phenyl ring via a reversible aryl C-H activation, which then res

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8

Al-Duaij, Omar Khalid. "Synthesis and reactivity of cyclometallated complexes containing nitrogen donor ligands." Thesis, University of Leicester, 2005. http://hdl.handle.net/2381/30095.

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This thesis describes the synthesis and reactivity of cyclometallated complexes containing nitrogen donor ligands.;Chapter One introduces the general chemistry of cyclometallated complexes containing C,N-bidentate ligands, then describes the mechanism of cyclometallated complexes. This is followed by an overview of the applications of cyclometallated complexes.;Chapter Two provides an introduction to hemilability and reviews the synthesis of cyclopalladated complexes containing C,N,X tridentate ligands (X= N, S, O). The synthesis of new cyclopalladated imines containing oxygen-functionalised t

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9

Zaarour, Moussa. "Luminescent and NLO active tris- and bis-cyclometallated iridium complexes." Rennes 1, 2012. http://www.theses.fr/2012REN1S110.

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New series of substituted Ir(ppy)3 derivatives incorporating various vinyl-aryl systems with electron-donating groups on their pyridyl rings or donor/acceptor groups on their phenyl rings were synthesized using the so-called technique “chemistry on the complex”. These complexes are luminescent with emission wavelength that is tuned by introducing stronger donating groups or extending the π-system. These complexes present strong NLO properties controlled by the charge transfer transitions (ILCT and MLCT) induced by donor-acceptor interaction within the complex. We have developed the first examp

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10

Contaldi, Simone <1982&gt. "Synthesis and Structures of palladium(II) and platinum(II) complexes containing cyclometallated 2-thienylpyridines." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2727/1/contaldi_simone_tesi.pdf.

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11

Contaldi, Simone <1982&gt. "Synthesis and Structures of palladium(II) and platinum(II) complexes containing cyclometallated 2-thienylpyridines." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2010. http://amsdottorato.unibo.it/2727/.

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12

Howarth, Ashlee Joanna. "Bis-cyclometallated iridium(III) complexes bearing pyridineimine and salicylimine ancillary ligands : synthesis, characterization and applications." Thesis, University of British Columbia, 2014. http://hdl.handle.net/2429/48396.

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Two stable diastereomeric atropisomers of a cyclometallated iridium complex containing a pyrene functionalized pyridineimine ligand have been isolated. These are the first fully characterized examples of metal containing atropisomers in which the rotational axis is not between two chelating atoms. The atropisomers can be converted thermally via a rocking motion of the pyrene moiety. A new mechanism for enhanced phosphorescence emission in the solid state (EPESS) in cyclometallated Ir complexes with the general formula [Ir(C^N)₂(N^O)] involving distortion of the six-membered chelate ring of the

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13

Mirzadeh, Nedaossadat, and s3114476@student rmit edu au. "Synthesis, structures and reactions of new cyclometallated dinuclear gold complexes containing the fluorine-substituted ligands." RMIT University. Applied Sciences, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20081204.114414.

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The dinuclear cyclometallated gold(I) complex [Au2(μ-2-C6F4PPh2)2] was prepared in high yield from the reaction of 2-LiC6F4PPh2 with either [AuBr(AsPh3)] or [AuCl(tht)], and from the reaction of 2-Me3SnC6F4PPh2 with [AuCl(tht)]. The digold(I) complex undergoes oxidative addition reactions with halogens to give the metal-metal bonded dihalodigold(II) complexes [Au2IIX2(μ-2-C6F4PPh2)2] (X = Cl, Br, I), which on warming or exposure to light, isomerise to give the heterovalent gold(I)-gold(III) species [XAu(µ-2-C6F4PPh2)(κ2-2-C6F4PPh2)AuX] containing a four-membered cyclometallated ring on a

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14

Brulatti, Pierpaolo. "New luminescent iridium (III) complexes containing NCN cyclometallated ligands : synthesis, photophysical properties and emission tuning." Thesis, Durham University, 2010. http://etheses.dur.ac.uk/447/.

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The luminescence properties of cyclometallated iridium(III) complexes render them of interest, for example, as phosphorescent dopants in organic light-emitting devices (OLEDs), as photoactive units in solar energy conversion, and as biosensors. The vast majority comprise three bidentate ligands, archetypal examples being Ir(ppy)3 and [Ir(ppy)2(bpy)]+ (ppy = 2-phenylpyridine; bpy = 2,2'- bipyridine). The work described here explores the chemistry of iridium(III) complexes that contain a terdentate cyclometallating ligand. Most of the complexes studied have the general formula Ir(N^C^N)(N^C)X, w

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15

陳展榮 and Chin-wing Chan. "Transition metal complexes of quaterpyridines and photochemical studies of cyclometallated gold(III) and platinum(II) complexes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1993. http://hub.hku.hk/bib/B31233454.

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16

張子俊 and Tsz-chun Cheung. "Structures and photoluminescence of polypyridine and cyclometallated complexes of Pt(II), Pd(II) and Au(III)." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1997. http://hub.hku.hk/bib/B31235657.

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17

Stylianides, Neoklis. "Functionalised and cyclometallated N-heterocyclic carbene complexes of Pd, Ni, Rh and Ir : synthesis and applications." Thesis, University of Southampton, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.440604.

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18

Chan, Chin-wing. "Transition metal complexes of quaterpyridines and photochemical studies of cyclometallated gold(III) and platinum(II) complexes /." [Hong Kong : University of Hong Kong], 1993. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13671753.

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19

Cheung, Tsz-chun. "Structures and photoluminescence of polypyridine and cyclometallated complexes of Pt(II), Pd(II) and Au(III) /." Hong Kong : University of Hong Kong, 1997. http://sunzi.lib.hku.hk/hkuto/record.jsp?B18598158.

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20

Rochester, David Lee. "Cyclometallated platinum and palladium complexes with N^C^N-coordinating terdentate ligands : synthesis, luminescence and catalytic properties." Thesis, Durham University, 2007. http://etheses.dur.ac.uk/1325/.

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A series of cyclometallated platinum and palladium(lI) complexes based on the N'C'N coordinating terdentate ligand 1,3-di(2-pyridyl)benzene, HL1, have shown that cyclometalation at C2 of the central ring affords many advantages to square-planar d8-metal complexes. The cyclometalating bond is notably shorter than that observed in many related cyclometallated complexes, e.g. 6phenyl- 2,2'-bipyridine platinum/palladium(lI) chloride and 2-phenylpyridine derivatives. The luminescent properties of the complexes reported herein have been investigated. All complexes are intensely luminescent, in their

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21

Zheng, Feng. "Olefin oligomerization reactions theoretical studies using cyclometallated palladium(II) catalysts and experimental studies on platinum(II) analogues." Doctoral thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/10908.

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Includes abstract.<br>Includes bibliographical references.<br>Ethylene oligomerization reactions catalysed by cyclometallated palladium(II) N-benzylidenebenzylamine complexes were studied theoretically. Density functional theory (DFT) calculations are reported on the interaction of various MAO models with the methylated pre-catalyst. The neutral MAO dissociation process is shown to remain the major interaction that takes place in the Pd/MAO interactions. On the other hand, the formal methyl abstraction process could be also feasible if more energy is provided. Therefore, the relative energies

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22

Rosol, Malgorzata. "Síntesis y estudio de nuevos derivados ciclometalados del ferroceno / Synthesis and study of new cyclometallated derivatives of ferrocene." Doctoral thesis, Universitat de Barcelona, 2007. http://hdl.handle.net/10803/2799.

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The present Doctoral Thesis focuses in two main fields: alkyne-dicobaltcarbonyl complexes (PART I) and chiral ferrocene derivatives (PART II). Therefore, the obtained results can be summarized as follow: <br/><br/>1. The methodology designed for the synthesis of enantiomerically pure phosphane-substituted carbonyl complexes of propargyl aldehyde was not successful. The steric hindrance at position C-4 of the oxazolidin-2-one and oxazolidin-2-thione appears to difficult the removal of the auxiliary in the corresponding N-(2-alkynoyl) dicobaltcarbonyl complexes.<br/><br/>2. The general catalytic

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23

Tarran, William Andrew. "Cyclometallated platinum and iridium complexes with thiolate ligands, and novel bioimaging agents inspired by dynamic disulfide interchange reactions." Thesis, Durham University, 2011. http://etheses.dur.ac.uk/851/.

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The photoluminescence properties of cyclometallated second and third row transition metal complexes make them potential candidates for use in a range of applications such as triplet harvesting agents in OLEDS, as photosensitizers, and in solar cells. Also, the strong luminescence of these complexes gives them much potential for use in chemosensing applications and as bioimaging agents. This final topic is an area of increasing study as a result of the diverse and tuneable excited states of such molecules, and their advantages over conventional organic emitters such as reduced photobleaching an

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24

Chodorowski-Kimmes, Sandrine. "Complexes binucleaires du ruthenium et de l'osmium a ligands pontants cyclometallants assurant un fort couplage electronique." Université Louis Pasteur (Strasbourg) (1971-2008), 1995. http://www.theses.fr/1995STR13091.

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Afin d'observer un transfert d'electron optique ou un transfert d'energie dans des systemes multimetalliques, nous avons prepare deux series de complexes dans lesquelles la distance centre a centre peut etre modulee. Les ligands pontants sont des ligands biscyclometallants, synthetises par des reactions de couplage de type suzuki ou stille. Dans les complexes a valence mixte ruthenium(ii)-ruthenium(iii), l'element de matrice de couplage electronique vab, ainsi que la stabilite des especes a valence mixte, ont ete determines. Le couplage electronique reste important meme a longue distance. Nous

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25

Chow, Pui-keong, and 周沛強. "Luminescent palladium(II) and platinum(II) complexes with tridentate monoanionic and tetradentate dianionic cyclometallated ligands : structures, photophysical properties and material application." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/193416.

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Four structural isomers of platinum(II) complexes with C-deprotonated R-C^N^N-R’ cyclometallated ligands (R-C^N^N-R’ = -extended 6-aryl-2,2’-bipyridine derivatives containing 2-naphthyl, 3-isoquinolinyl, 1-isoquinolinyl or 2-quinolinyl moieties) have been synthesized with their photophysical properties investigated. The one bearing a 3-isoquinolinyl moiety shows the highest emission quantum yield among the four and hence has been extensively modified to give a series of complexes with different ancillary ligands (chloride, iodide, phenoxide, or acetylide). Most of these complexes show vibroni

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26

Swarts, Andrew John. "Mononuclear and multinuclear palladacycles as catalysts." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6626.

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27

陳國柱 and Kwok-chu Chan. "Study of photoinduced electron transfer reactions and effect of solvent interactions on the photophysical and photochemical propertiesof dinuclear Au(I), polynuclear Cu(I) and cyclometallated Pt(II)complexes." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1999. http://hub.hku.hk/bib/B29866376.

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28

Chan, Kwok-chu. "Study of photoinduced electron transfer reactions and effect of solvent interactions on the photophysical and photochemical properties of dinuclear Au(I), polynuclear Cu(I) and cyclometallated Pt(II) complexes /." Hong Kong : University of Hong Kong, 1999. http://sunzi.lib.hku.hk/hkuto/record.jsp?B20896803.

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29

D'Andrea, Rodríguez-Vida Lucía. "Síntesis y reactividad de iminas y diiminas ciclopaladadas. Una aproximación a los metalaciclos hidrosolubles." Doctoral thesis, Universitat de Barcelona, 2013. http://hdl.handle.net/10803/123495.

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La tesis doctoral se divide en cuatro partes: a) Síntesis de complejos ciclopaladados endocíclicos de cinco eslabones derivados de la (E)-N-benciliden-2-(2',6'-diclorofenil)etanamina, de fórmula [(Pd{C6H4CH=N(CH2)2(2,6-Cl2C6H3)-κC,κN}(μ-X))2] (X = OAc, Cl) y [Pd{C6H4CH=N(CH2)2(2,6-Cl2C6H3)-κC,κN}L(X)] (X = OAc, Cl; L = py-d5, PPh3). Se ha ensayado la reactividad de los correspondientes complejos puente cloruro frente a una gran variedad de bases de Lewis [N,N] y [P,P] rígidas y flexibles {tales como 2,2'-(etilendioxi)bis(etilamina); 1,3-diaminopropan-2-ol; etilendiamina; trans-1,2-bis(dife

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30

Mungwe, Nothando Wandile. "The synthesis of the cyclometallated palladium complexes and their applications in olefin oligomerization and in phenylacetylene oligomerization/polymerization." Thesis, 2007. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_8819_1260174722.

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<p><font face="TimesNewRomanPSMT"> <p align="left">This thesis reports the synthesis of the imine ligands from Schiff base condensation reaction of aldehyde derivatives and equimolar quantities of aniline derivatives. The imine ligands spectrometry.</p> </font></p>

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31

Latten, Jozef Leonardus. "Arene ruthenium hydrido complexes and their cyclometallated derivatives." Phd thesis, 1985. http://hdl.handle.net/1885/139943.

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32

Quigley, Brendan Liam. "Understanding Selectivity and Activity in Z-selective Metathesis with Cyclometallated Ru-based Catalysts." Thesis, 2016. https://thesis.library.caltech.edu/9846/20/Quigley_Thesis_Final_BQ.pdf.

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<p>With the advent of well-defined highly active catalysts, olefin metathesis has become a powerful tool for the formation of carbon–carbon double bonds in a variety of settings. However, these traditional catalysts preferentially form the E-alkene product. Recent efforts have yielded several families of Z-selective metathesis catalysts, including a family of Ru complexes with cyclometallated NHC ligands developed in our group. The work in this thesis describes efforts to develop an improved understanding of the catalyst features that govern activity and selectivity in the cyclometallated Ru-b

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33

Dinh, Thuy Hien. "Characterization of the chemical and electronic properties of the AB005 cyclometallated compound self-assembled on Ag(110)." Master's thesis, 2021. https://hdl.handle.net/10216/139589.

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34

McCormick, Theresa. "LUMINESCENT TRANSITION METAL COMPLEXES OF 2-(2’-PYRIDYL)BENZIMIDAZOLYL AND 2-(2’-PYRIDYL)INDOLYL BASED LIGANDS AND THEIR APPLICATIONS." Thesis, 2008. http://hdl.handle.net/1974/1502.

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The objective of this thesis is to examine the photophysical and structural properties of Cu(I) complexes of 2-(2’-pyridyl)benzimidazolyl based ligands and Cu(I), Pd(II) and Pt(II) complexes of 2-(2’-pyridyl)indolyl based ligands, for possible use as phosphorescent emitters in OLEDs. The discovery of the atropisomeric 3,3’-bis(2-(2’-pyridyl)indolyl based ligands led to the examination of C-C coupling reactions and the investigation of the new chiral ligands with transition metal ions. Cu(I) complexes of 2-(2’pyridyl)benzimidazolyl-benzene with varying phosphine ligands were prepared. Th

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