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Дисертації з теми "Metal diketonate"

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Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 29 січня 2023

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1

Lerach, Jordan O. "Investigations into the gas-phase rearrangements of some transition metal beta-diketonate complexes /." Connect to resource online, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1222114603.

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2

Lerach, Jordan O. "Investigations into the Gas-Phase Rearrangements of Some Transition Metal β-Diketonate Complexes". Youngstown State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1222114603.

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3

Kemats, Kyle. "Examining the Gas-Phase Fragmentation of Select Metal ß-diketonate Complexes Using Computational Methods." Youngstown State University / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1410787738.

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4

Fleming, Kathleen. "The Gas-Phase Ligand Exchange of Select Alkaline Earth and Transition Metal ß-diketonate Complexes." Youngstown State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1465062889.

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5

Hunter, Gerald O. "The examination of the stability and reactivity of select transition metal [beta]-diketonate complexes during gas-phase ligand exchange reactions /." Connect to resource online, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1263671226.

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6

Lord, Rianne Michaela. "Synthesis of novel functionalised β-ketoiminate and β-diketonate metal complexes for their use in anti-cancer treatment". Thesis, University of Leeds, 2014. http://etheses.whiterose.ac.uk/6386/.

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This thesis is concerned with the synthesis, characterisation and evaluation of novel metal complexes for their application as anti-cancer agents. It contains the in vitro cell results, along with a range of other techniques to determine their biological relevance and their potential as anti-cancer agents. Chapter 1 contains an introduction to the project including a literature search, previously synthesised complexes and project aims Chapter 2 presents the synthesis and characterisation of novel β-diketonate and β-ketoiminate ligands. X-ray crystallographic data are analysed for some of the ligands. Chapter 3 discusses the synthesis and characterisation of novel β-ketoiminate ruthenium chloride complexes. X-ray crystallographic data are analysed for all of the complexes. Chapter 4 introduces the MTT technique for assessing cytotoxicity, and presents in vitro activities for the library of complexes synthesised in Chapter 3. Chapter 5 looks at modifications of the previous ruthenium (II) complexes, introducing new ligands and iridum metal centres. X-ray crystallographic data for all of these complexes has been discussed, along with in vitro activity against a range of cell lines. Chapter 6 introduces hypoxia and states the cytotoxicities of a range of complexes under 1.0% and 0.1% oxygen concentrations. Chapter 7 discusses mechanistic studies on the complexes, including hydrolysis, hydrophobicity, Comet assay, apoptosis and thioredoxin reductase inhibition. Chapter 8 introduces the previous group IV work within the group and an extension of the library by synthesis of β-ketoiminate titanium complexes. X-ray crystallographic analysis is discussed where applicable. Chapter 9 contains experimental details and characterisation data for all compounds described in Chapters 2, 3, 5 and 8. Also protocols for all the biological studies. Appendix presents a summary of X-ray crystallographic structure analysis for any crystals obtained within this work.

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7

Boulos, Victoria Marie. "The Gas-Phase Ligand Exchange of Select Metal Bis-diisopropylacetylacetonate Complexes." Youngstown State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1503671099629922.

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8

Obi-Johnson, Bettie Jeanne. "Mechanistic analysis of the thermally induced decomposition of certain metal beta-diketonate precursors for chemical vapor deposition of electronic materials." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/30743.

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9

Hunter, Gerald Jr. "The Examination of the Stability and Reactivity of Select Transition Metal β-Diketonate Complexes during Gas-Phase Ligand Exchange Reactions". Youngstown State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1263671226.

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10

Gasior, James Kole. "The Gas-Phase Ligand Exchange of Trivalent Metal ß-Diketonates." Youngstown State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ysu1495099165708741.

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11

Clausen, Christian. "Dianionische Oxy-Cope-Umlagerungen durch die Addition von Vinyl-Metall-Reagenzien an 1,2-Diketone." [S.l. : s.n.], 1998. http://deposit.ddb.de/cgi-bin/dokserv?idn=95482346X.

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12

Soules, Régis. "Proprietes cooperatives de complexes polymetalliques des ligands squarate et thiosquarate." Toulouse 3, 1987. http://www.theses.fr/1987TOU30178.

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Анотація:

Etude de l'emploi d'un coordinat assembleur qui puisse par coordination avec le centre metallique utilise (metaux de transition du groupe viii) aboutir a un agencement a une dimension des motifs moleculaires par empilement d'entites monomeres ou par formation de chaines. Par utilisation du coordinat squarate sous ses formes oxygenees et soufrees, obtention d'un certain nombre de complexes de pt, pd, ni et cu repondant aux criteres fixes. Etude des structures de ces composes, de leurs proprietes physiques et de la relation structure-propriete. La nature du coordinat comme le caractere specifique de l'arrangement structural ont ete discutes pour une approche de la comprehension de la nature de ces proprietes physiques

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13

Cawthray, Jacqueline F. "UVA chemical filters: a systematic study." Thesis, 2010. http://hdl.handle.net/2440/61508.

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Sunscreens are a popular and effective method of protecting against the damaging effects of solar radiation including skin cancer and immune system suppression. Chemical sunscreen filters achieve this by absorbing ultraviolet radiation and can be classified as UVB (280 – 320 nm) or UVA (320 – 400 nm) sunscreens depending on the wavelengths in which they absorb energy. An efficient sunscreen must afford protection against both UVB and UVA. The majority of chemical filters approved for use worldwide are UVB absorbers and the few UVA filters approved provide minimal UVA protection or show only moderate photostability. For example, the enol form of the β-diketone, BMDBM (I), absorbs strongly in the UVA region but is prone to photodegradation via the keto form (II). The purpose of the research presented has been to investigate methods aimed at improving sunscreen protection against wavelengths in the UVA region. The first approach involves adaptation of the commonly used sunscreen filter, BMDBM, to enhance its effectiveness as a UVA sunscreen filter. The emphasis has been on improving the photostability and absorption properties whilst maintaining the chemical identity of the sunscreen. This can be achieved by chelation of either Zn(II) or Al(III) by the enol form (I) of BMDBM. The results of a systematic study including potentiometric titration, spectroscopic analysis and laser flash photolysis studies are presented. A second approach has been the encapsulation of the β-diketone, BMDBM, in cyclodextrins. Cyclodextrins are cyclic oligosaccharides having a hydrophobic central cavity. The interest in cyclodextrins comes from their ability to encapsulate other molecules (guest) within their annuli to form host-guest complexes held by non-covalent forces. The formation of such inclusion complexes often results in the modification of the guest characteristics. The inclusion complexes formed between BMDBM and either β- cyclodextrin (βCD) or hydroxypropyl-β-cyclodextrin (HPβCD) has been characterized by 1H and 1H ROESY NMR spectroscopic methods. The further method aimed at improving UVA protection has involved exploring the use of theoretical methods as a tool in the design of potentially new sunscreens. In particular, the ability of the SAC-CI method to represent the trends and properties important to the photochemistry of a series of known β-diketones has been investigated. This information can then be used to complement experimental methods in the design of candidate sunscreen filters having the desired properties.
Thesis (Ph.D.) - University of Adelaide, School of Chemistry and Physics, 2010.

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14

Pousaneh, Elaheh. "Synthesis and Characterization of Metal Complexes for Thin Film Formation via Spin-Coating or Chemical Vapor Deposition." 2019. https://monarch.qucosa.de/id/qucosa%3A72463.

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The present thesis describes the synthesis and characterization of magnesium, copper, and iron complexes and their application in the MOCVD (Metal-Organic Chemical Vapor Deposition) process, as well as the synthesis and characterization of yttrium and gadolinium complexes and their use as spin-coating precursors for metal oxide thin layer formation. The objective of this scientific work is the development of the family of bis(β-ketoiminato) magnesium(II) complexes and a series of heteroleptic β-ketoiminato copper(II) precursors for the formation of magnesium oxide and copper/copper oxide layers by using the MOCVD process. Modifications of the ketoiminato ligands affect the physical and chemical properties of the respective complexes. Another central theme of this work is the development of β-diketonato iron(III) complexes for the deposition of carbon-free gamma- and alpha-Fe2O3 layers via MOCVD. The thermal behavior and vapor pressure of the precursors could be influenced by the variation of the β-diketonate ligands. In addition, the synthesis and characterization of yttrium and gadolinium β-diketonates and their use as spin-coating precursors are described. Field-effect transistors were successfully fabricated by the deposition of carbon nanotubes on top of the Y2O3 films.

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15

Reimer, Mark Lindsay John. "Mass spectrometry of fluorinated metal [beta]-diketonates and monothio-[beta]-diketonates." 1988. http://hdl.handle.net/1993/16695.

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16

Yung, Tun-Yuang, and 雍敦元. "The Substituent effect of B-diketonato Metal Complexes containing DMF." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/14015727055564855945.

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Анотація:

碩士
國立中山大學
化學系研究所
89
In this study, we focus on the substituent effect of the diketone ligands on the structural variation of β- diketonato metal complexes containing N,N-dimethyl formamide (DMF). Three β-diketones (hfac, bztf, bzbz) were used, and six-, five-, four- coordinated complexes were found accordingly. It is surprising to find that all six metal-oxygen bonds in the M(hfac)2(DMF)2 complexes are of equal length, seemly in violation of Jahn-Teller theorem. Possible reasons for this observation were discussed in this thesis.

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17

Liu, Shean-Bin, та 劉顯斌. "A Study on the Isomerization of β-Diketonato Complexes of Group Ⅳ Metals". Thesis, 1997. http://ndltd.ncl.edu.tw/handle/75208850915362519951.

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18

Bocknack, Brian Matthew Krische Michael J. "Electrophilic trapping of enolates in tandem reaction processes and (1,3-diketonato)metal templates for asymmetric catalysis." 2004. http://repositories.lib.utexas.edu/bitstream/handle/2152/2131/bocknackbm84986.pdf.

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19

Bocknack, Brian Matthew. "Electrophilic trapping of enolates in tandem reaction processes and (1,3-diketonato)metal templates for asymmetric catalysis." Thesis, 2004. http://hdl.handle.net/2152/2131.

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20

LU, JIA-LIN, and 呂嘉霖. "Potential Antioxidant Activity of Novel Aliphatic 1,2-Diketone Bis(thiosemicarbazone) Schiff-Base Ligands and Their Transition Metal Complexes." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/07134011897505625584.

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Анотація:

碩士
南臺科技大學
化學工程與材枓工程系
105
Thiosemicarbazones (TSCs) reportedly have potential therapeutic activity and are widely applied in medicine especially in the treatment of tuberculosis. Various compounds with a TSC moiety also exhibit biological activity. In a number of cases, the transition metal complexes of TSC exhibit greater biological activity than the corresponding ligands, such as antimicrobial, antiamoebic, antitumor and anticancer activities. Hence, this observation has encouraged detailed studies on the coordination chemistry of thiosemicarbazones. Because of the aliphatic compounds are more easily metabolized than aromatic compounds in the human body. This study focuses on the syntheses of transition metal complexes derived from novel aliphatic thiosemicarbazones and their biological activity. The text was divided into four major parts: In the first part, various substituted-aliphatic 1,2-diketones were treated with different thiosmeicarbazides, such as 4-phenylthiosemicarbazide, 4-(4-methylphenyl) thiosemicarbazide and 4-ethylthiosemicarbazide to afford a serial of desired aliphatic 1,2-diketone bis(thiosemicarbazone) Schiff-bases. In the second part, the synthetheses and spectral characterization of diverse nickel complexes were discussed separately by two sections: (A) the aliphatic 1,2-diketone bis(4-phenylthiosemicarbazone) and aliphatic 1,2-diketone bis(4-(4-methylphenyl) thiosemicarbazone)Schiff-bases were treated with nickel(II) chloride hexahydrate to afford the corresponding nickel complexes; (B) the aliphatic 1,2-diketone bis (4-ethylthiosemicarbazone)ligands were treated with nickel(II) perchlorate hexahydrate in the presence of triethylamine to obtain the desired nickel complexes. In the third part, the syntheses and spectral characterization of the other transition metal complexes were studied through the reaction of 1,2-diketones bis (thiosemicarbazone) with transition palladium(II) metal ion. In the fourth part, evaluation of antioxidant activity-scavenging effect on DPPH radical has been studied. Among them, almost all the ligands exhibited the potent DPPH radical scavenging activity, comparable to the activity of vitamin E.

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21

Chen, Ching Lin, and 陳敬霖. "Metal-Free Radical Addition to Diketone via Propenone with Alkene and Cycloaddition of Dienylbenzene and Nitrosobenzene to Isoxazole Derivatives." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/8qd63x.

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Анотація:

碩士
國立清華大學
化學系
105
PART 1 Here, we described the synthesis of 2-substituted-3-oxo-N-phenylbutanamide through an efficient radical addition reaction. Optimizing the condition for the radical addition of alkenes with (E)-4-(phenylamino)-4-((2,2,6,6-tetramethylpiperidin-1-yl)oxy) prop-3-en-1-substituted-2-one, and we have it best performed at 120 oC in toluene that described with moderate to good yields. The structures of products consist of diketone and N-phenylamide, which could be used for further applications such as providing starting materials for Mannich reaction to synthesize natural products. PART 2 This part of the dissertation deals with a metal free [2+2+2] radical cycloaddition of 1-allyl-2-vinylbenzene derivatives and nitrosobenzenes constructing (1S,4S)-2-phenyl-2,3,4,5-tetrahydro-1H-4,1-(epoxymethano) benzo[c]azepine derivatives. The advantages of this new radical cycloaddition are based on the easily accessible substrates and the readily achievable condition. There are only few examples using alkene for [2+2+2] radical cycloaddition reactions so far, which highlighted the value of this research.

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22

Clausen, Christian [Verfasser]. "Dianionische Oxy-Cope-Umlagerungen durch die Addition von Vinyl-Metall-Reagenzien an 1,2-Diketone / von Christian Clausen." 1998. http://d-nb.info/95482346X/34.

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