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Dissertations / Theses on the topic 'Chromium (III) Complex'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

O'Connor, Sean M. J. "Application of Tridentate Schiff Base Chromium (III) Complex Catalysts Towards the Total Synthesis of (-)- Lasonolide A and C-Disaccharide Mimics." Thesis, Griffith University, 2012. http://hdl.handle.net/10072/366217.

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This thesis describes the synthetic studies performed utilizing tridentate Schiff base Cr(III) complex catalysts towards the total synthesis of ()-lasonolide A resulting in the completion of synthetic efforts towards the C17-C25 segment. Further summarization is also given on completion of the C7-C16 segment and an overview of future directions toward to the total synthesis of ()-lasonolide A. Both tetrahydropyrans C7-C11 and C19-C23 were to be constructed utilising an asymmetric hetero-Diels–Alder protocol involving Jacobsen’s hetero-Diels–Alder catalyst providing a means to generate a numb

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2

SILVA, THAMIRES IDALINO DA. "SYNTHESIS AND CHARACTERIZATION OF GOLD NANOPARTICLES AND SERS RESPONSE OF ETHYLENEDIAMINETETRAACETIC ACID AND ITS CHROMIUM(III) COMPLEX ADSORVED ON THEIR SURFACE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2013. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=25035@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>As nanopartículas, atualmente, têm sido alvo de pesquisas em diversas áreas devido as suas exclusivas propriedades magnéticas, fotônicas, optoeletrônicas e catalíticas. O presente trabalho teve como objetivo estudar a resposta SERS, bem como as possíveis interações existentes entre as nanopartículas de ouro com ácido etilenodiaminotetraacético e o seu respectivo complexo com cromo (III). Este complexo foi sintetizado e caracterizado pelas técnicas de análise elementar (espectr

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3

Lourenço, Leandro Maranghetti. ""Estudo espectrofotométrico do sistema crômio(III)/azoteto e seu aproveitamento analítico"." Universidade de São Paulo, 2004. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-20032004-145858/.

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Na área de Química, uma das linhas mais tradicionais de pesquisa envolve o estudo de formação de complexos. Estes trabalhos são realizados de modo sistemático em nossos laboratórios, geralmente envolvendo cátions de metais de transição com vários ligantes (haletos, pseudo-haletos e carboxilatos). A intensa coloração desenvolvida pela maioria dessas reações de complexação, entre um metal e um pseudo-haleto, tem motivado o desenvolvimento de novos métodos espectrofotométricos para a determinação de íons em amostras reais. Espera-se que o crômio(III), da mesma forma que outros metais de transição

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4

Beaujolais, Virginie. "Cavités moléculaires chirales à groupements hydroxyles convergents : synthèses et étude de complexation." Université Joseph Fourier (Grenoble), 1996. http://www.theses.fr/1996GRE10148.

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La complexation du fer est un probleme biologique fondamental, resolu chez les microorganismes par les siderophores, ligands de bas poids moleculaire aptes a solubiliser selectivement les ions ferriques, puis a livrer le metal a la cellule via des processus de reconnaissance complexes. Les siderophores synthetiques presentent a la fois un interet pour l'etude du metabolisme du fer et peuvent avoir des applications therapeutiques dans le cas des surcharges en fer. Un nouveau siderophore synthetique tripodal, base sur trois sous-unites chelatantes de type o,o'-dihydroxybiphenyle, a ete prepare e

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5

Puzon, Geoffrey J. "Biochemistry of chromium(VI) reduction formation, fate, and implications of soluble organo-chromium(III) complexes on the biogeocycle of chromium /." Online access for everyone, 2004. http://www.dissertations.wsu.edu/Dissertations/Spring2004/g%5Fpuzon%5F042204.pdf.

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6

Thompson, Nicholas John. "Chromium (III), Titanium (III), and Vanadium (IV) sensitization of rare earth complexes for luminescent solar concentrator applications." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/69674.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2011.<br>This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references (p. 56-59).<br>High optical concentrations without excess heating in a stationary system can be achieved with a luminescent solar concentrator (LSC). Neodymium (Nd) and ytterbium (Yb) are excellent infrared LSC materials: inexpensive, abundant, efficient, and spectr

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7

Marcou, Christopher Ian. "The preparation, characterization and chromium(II) reduction of pentaamminecobalt(III) complexes of substituted thiophenes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0026/MQ51079.pdf.

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8

Halepoto, Dost Muhammad. "Syntheses and structures of some novel chromium(II), vanadium(II) and vanadium(III) complexes." Thesis, University of Surrey, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.375971.

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9

Congiu, Martina. "Synthesis and characterisation of luminescent lanthanide dyes for solar energy conversion." Thesis, University of Edinburgh, 2013. http://hdl.handle.net/1842/7724.

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Lanthanide (III) complexes are used extensively in solar conversion devices, such as Luminescent Solar Concentrators (LSCs) and Luminescent Down-Shifting (LDS) for their peculiar characteristics of narrow band emission, avoidance of re-absorption losses due to large Stokes shift and possibility of high photoluminescence quantum yield (PLQY). The study has looked into the synthesis of Ln (III) complexes of the general formula: [Ln(hfac)3DPEPO], where DPEPO = bis(2-(diphenylphosphino)phenyl)ether oxide, and hfac = hexafluoroacetylacetonate. The work presented in this thesis focuses on the synthe

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10

(11161362), Ashley Jo Schuman. "THE SYNTHESIS AND PHOTOPHYSICAL CHARACTERIZATION OF MACROCYCLIC CHROMIUM(III) COMPLEXES." Thesis, 2021.

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<p>Tetraazamacrocycles, such as cyclam (1,4,8,11-tetraazacyclotetradecane), are useful ancillary ligands in the formation of organometallic complexes. Coordination of a 3d metal can lead to the formation of square planar complexes, such as with Ni<sup>II</sup> and Cu<sup>II</sup>, or octahedral complexes upon coordination of additional ligands, such as with Co<sup>II/III</sup> and Cr<sup>II/III</sup>. Notably with Cr, a mixture of <i>cis-</i> and <i>trans-</i>octahedral complexes are formed, and the isomerism can be influenced through <i>C</i>-substitution of the cyclam macrocycle. Herein, Cr<

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11

Lin, Ying-Nan, and 林穎男. "The Effects of Chromium(III), Cobalt(III) and Vanadyl-Transferrin Complexes on Glucose Uptake in Muscle Cell." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/96079327332782842995.

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碩士<br>國立交通大學<br>生化工程研究所<br>93<br>The rate of mortality of diabetes in recent years increased seven times, from 6.5 people per 100,000 people in 1978 to 44.38 people in 2003. Moreover, diabetes also lead to other types of chronic disease, e.g., blood vessel disease, heart disease, kidney disease, hypertension and so on. In the present, the two classes of drug for treating diabetes are Sulphonylureas and Biguanides. Sulphonylureas promote the pancreas to secrete the insulin. The mechanism of Biguanides regulating the blood sugar is: inhibiting the appetite, postponing gut absorbing glucose and

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12

Neuhoff, Jeanine. "Speciation of Cr (II) and Cr (III) complexes by IC-ICP-OES and HPLC." Thesis, 2008. http://hdl.handle.net/10210/400.

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A lack of methods for the separation and determination of air-sensitive Cr(II) and stable Cr(III) complexes in aqueous and organic phase motivated this study. The formation of kinetically stable Cr(III) complexes with common anions was studied using ion chromatography coupled to inductively-coupled plasma emission spectrometry (ICP-OES). Distribution diagrams for the complex species were determined from the results. Estimations of the stability constants were made from these diagrams and compared with stability constants published in the literature. Separation and determination of Cr(II) and C

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13

Miti, Nangamso Alicia. "Bis(pyrazolyl) chromium(III), nickel(II) and palladium(II) complexes as ethylene oligomerization and polymerization catalysts." Thesis, 2010. http://hdl.handle.net/10210/3062.

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M.Sc.<br>In search of developing new pyrazolyl complexes that can be used for ethylene transformation reactions, bis(pyrazolyl)alky carbonyl and amine complexes were prepared. The reaction between 3,5-dimethylpyrazole with alkyl-carbonyl chloride linkers in the presence of triethylamine as a base produced the ligands, 1,3-bis(3,5- dimethylpyrazol-1-yl)-propan-1-one (L1), 1,2-bis(3,5-dimethylpyrazol-1-yl)-ethane- 1,2-dione (L2), 1,4-bis(3,5-dimethylpyrazol-1-yl)-butane-1,4-dione (L3) and 1,6- bis(3,5-dimethylpyrazol-1-yl)-hexane-1,6-dione (L4) as white to brown crystalline solids in good yields

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14

Brennan, Nicholas Frederick. "Synthesis and structural studies of N- and P-donor ligands in Chromium(III) complexes." Thesis, 2010. http://hdl.handle.net/2263/28960.

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The fundamental knowledge of Cr(III) chemistry has been enhanced via detailed structural and spectroscopic studies of largely novel compounds that may potentially be active tri- and tetramerisation precursors. The compounds are based on various monodentate and bidentate nitrogen and phosphorus ligands which have been coordinated to [CrCl3 (thf) 3]. The few compounds that have been synthesised previously have in this study been made via novel synthetic routes and incorporate a combination of new and more detailed analysis than was carried out previously. The eight structures determined, in addi

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15

WANG, PEI-LIAN, and 王佩蓮. "NMR relaxation analysis on the formation of outer-sphere-complexes between chloroform and tris (acetylacetonato) chromium (III) in solutions." Thesis, 1988. http://ndltd.ncl.edu.tw/handle/15625471373911055551.

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