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Dissertations / Theses on the topic 'Paramagnetic nickel'

Author: Grafiati

Published: 5 June 2025

Last updated: 15 July 2025

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1

García, Bueno Rocío. "Estudio de las propiedades ópticas y magnéticas de complejos pentacoordinados de níquel(II)." Doctoral thesis, Universidad de Murcia, 2012. http://hdl.handle.net/10803/84062.

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Síntesis, caracterización y estudio de las propiedades luminiscentes y magnéticas de complejos pentacoordinados de níquel(II) con ligandos orgánicos del tipo: 8-hidroxiquinolinas, imidas, benzazoles y ácidos mono- y dicarboxílicos. Utilización de estos complejos como sensores luminiscentes en la detección de cationes metálicos de interés biológico y/o ambiental.

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2

Filatre-Furcate, Agathe. "Conducteurs moléculaires neutres : complexes bis (dithiolène) d'or et de nickel." Thesis, Rennes 1, 2016. http://www.theses.fr/2016REN1S143.

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Au cours de ce travail, nous nous sommes particulièrement intéressés à une classe de molécules électroactives précurseurs de matériaux moléculaires conducteurs à composant unique, les complexes bis(1,2-dithiolène) d'or et de nickel neutres. Nous avons tout d'abord développé une série originale de complexes radicalaires d'or [Au(R-thiazYdt)2] à partir de ligands dithiolène, riches en électron, les N-alkyl-1,3-thiazoline-2-chalcogénone-4,5-dithiolate (R-thiazYdt)2 avec Y = O, S, Se et R = Pr, iPr, cycloPr, NMe2. Le substituant R de l'hétérocycle joue un rôle majeur sur les propriétés des matéria

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3

Gustafsson, Håkan. "Development of sensitive EPR dosimetry methods." Doctoral thesis, Linköpings universitet, Institutionen för medicin och hälsa, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-11099.

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Electron paramagnetic resonance (EPR) dosimetry using the well established dosimeter material alanine is a generally accepted dosimetric method for measurements of high absorbed doses. Alanine EPR dosimetry is however not sensitive enough for high precision measurements of low (< 5 Gy) absorbed doses using reasonably measurement times and small dosimeters. It has therefore not been possible to fully exploit the benefits of EPR dosimetry for applications in radiation therapy. The aim of this thesis was to show that sensitive EPR dosimetry is a competitive method for applications in radiation

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4

Favillier, Nathalie. "Caracterisation electrique et magnetique des manganites de nickel : application aux thermistances." Toulouse 3, 1988. http://www.theses.fr/1988TOU30066.

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Etablissement des correlations entre la composition, la stoechiometrie et la structure des composes par mesures de rpe (bande x et q), de susceptibilite magnetique et de conductivite electrique. Mise en evidence du caractere polyphasique des manganites de nickel et necessite d'un controle precis de l'atmosphere de synthese pour une bonne qualite d'echantillons

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5

Deb, Tapash K. "Bioinspired Redox Active Pseudotetrahedral Ni(II) Thiolate and Phenolate Complexes: Synthesis, Characterization, Alkylation Kinetics and Molecular Oxygen Activation." Ohio University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1377256181.

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6

Singh, Vivek. "Size dependent magnetic properties of nickel nanoparticles embedded in silica matrix." Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10355.

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Thesis (Ph. D.)--West Virginia University, 2009.<br>Title from document title page. Document formatted into pages; contains x, 114 p. : ill. Includes abstract. Includes bibliographical references (p. 97-100).

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7

Abdulmalic, Mohammad A., Azar Aliabadi, Andreas Petr, et al. "An interplay between the spin density distribution and magnetic superexchange interactions: a case study of mononuclear [nBu4N]2[Cu(opooMe)] and novel asymmetric trinuclear [Cu3(opooMe)(pmdta)2](NO3)2·3MeCN." Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-138948.

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Treatment of the diethyl ester of o-phenylenebis(oxamic acid) (opbaH2Et2, 1) with 5/6 equivalent of MeNH2 in abs. EtOH results in the exclusive formation of the ethyl ester of o-phenylene(N′-methyl oxamide)(oxamic acid) (opooH3EtMe, 2) in ca. 50% yield. Treatment of 2 with four equivalents of [Me4N]OH followed by the addition of Cu(ClO4)2·6H2O gave [Me4N]2[Cu(opooMe)]·H2O (3A) in ca. 80% yield. As 3A appears to be a hygroscopic solid, the related [nBu4N]+ salts [nBu4N]2[M(opooMe)]·H2O (M = Cu (3B), Ni (4)) have been synthesized. By addition of two equivalents of [Cu(pmdta)(NO3)2] to a MeCN sol

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8

Abdulmalic, Mohammad A., Azar Aliabadi, Andreas Petr, et al. "An interplay between the spin density distribution and magnetic superexchange interactions: a case study of mononuclear [nBu4N]2[Cu(opooMe)] and novel asymmetric trinuclear [Cu3(opooMe)(pmdta)2](NO3)2·3MeCN." Royal Society of Chemistry, 2012. https://tud.qucosa.de/id/qucosa%3A27795.

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Treatment of the diethyl ester of o-phenylenebis(oxamic acid) (opbaH2Et2, 1) with 5/6 equivalent of MeNH2 in abs. EtOH results in the exclusive formation of the ethyl ester of o-phenylene(N′-methyl oxamide)(oxamic acid) (opooH3EtMe, 2) in ca. 50% yield. Treatment of 2 with four equivalents of [Me4N]OH followed by the addition of Cu(ClO4)2·6H2O gave [Me4N]2[Cu(opooMe)]·H2O (3A) in ca. 80% yield. As 3A appears to be a hygroscopic solid, the related [nBu4N]+ salts [nBu4N]2[M(opooMe)]·H2O (M = Cu (3B), Ni (4)) have been synthesized. By addition of two equivalents of [Cu(pmdta)(NO3)2] to a MeCN sol

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9

Holze, Patrick. "Die Aktivierung von reaktionsträgen kleinen Molekülen an koordinativ ungesättigten Beta-Diketiminato-Nickelkomplexen." Doctoral thesis, Humboldt-Universität zu Berlin, Mathematisch-Naturwissenschaftliche Fakultät, 2016. http://dx.doi.org/10.18452/17594.

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Kleine Moleküle wie Treibhausgase, aber auch Distickstoff und Disauerstoff stehen im Fokus der chemischen Forschung. Solche Moleküle sind durch ihr Vorkommen in der Atmosphäre ubiquitär vorhanden, preiswert und könnten als Synthesebausteine für die Darstellung von komplexeren Molekülen verwendet werden. In dieser Arbeit wurde die Reaktion koordinativ ungesättigter Diketiminato-Nickelkomplexe ([LNi] Komplexe) mit kleinen Molekülen untersucht. Zunächst wurden die Mechanismen der N2-Aktivierung durch reduzierte [LtBuNiI]- und [LMe6NiI] Komplexe miteinander verglichen. Dabei konnte das disticksto

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10

Mazur, Tomasz. "Heterogeneus adducts of small molecules with intrazeolite nickel ions : continuous wave electron paramagnetic resonance and pulse hyperfine sublevel correlation spectroscopic studies." Praca doktorska, 2015. https://ruj.uj.edu.pl/xmlui/handle/item/45760.

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11

Wang, Chunzheng. "Electron paramagnetic resonance and optical-absorption studies on Cu²⁽ r impurity in single/poly crystals of hydrated monopyrazine zinc sulphate, (cadmium, nickel, magnesium)-ammonium sulphate, and magnesium acetate." Thesis, 1990. http://spectrum.library.concordia.ca/5901/1/NN64677.pdf.

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12

Ting, Chiao-Han, and 丁橋瀚. "The paramagnetic NMR study of saddledmetalloporphyrins&;#61485;1. Characterization of Saddled Nickel(III)Porphyrin Cation Radical :The NMR ExplicativeModel for Ferromagnetically CoupledMetalloporphyrin Radical.2. Saddle-shaped six-coordinate iron(III) porphyrincomplex with unusual intermediate-spinelectronic structure." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/78982289555784286133.

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博士<br>中興大學<br>化學系所<br>102<br>The two-electron oxidized NiII(OETPP)( 2,3,7,8,12,13,17,18-Octaethyl-5,10,15,20-tetraphenylporphyrin), which had merely been generated by eletrooxidation, is first chemically synthesized by addition of one equiv. of Br2 in benzene solution. The detailed magnetic properties are well characterized by EPR zero-field splitting (D), paramagnetic NMR analyses and DFT calculations to elucidate the electron configuration from two plausible states with similar spin distributions in ring macrocycle to be Ni(III) low-spin (dxy2dxz,yz4dz21dx2-y20, S =1/2) orthogonally coupled

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13

Ting, Chiao-Han, and 丁橋瀚. "The paramagnetic NMR study of saddled metalloporphyrins- 1. Characterization of Saddled Nickel(III) Porphyrin Cation Radical :The NMR Explicative Model for Ferromagnetically Coupled Metalloporphyrin Radical. 2. Saddle-shaped six-coordinate iron(III) porphyrin complex with unusual intermediate-spin electronic structure." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/81564703375984847254.

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博士<br>國立中興大學<br>化學系所<br>102<br>The two-electron oxidized NiII(OETPP)( 2,3,7,8,12,13,17,18-Octaethyl-5,10,15,20-tetraphenylporphyrin), which had merely been generated by eletrooxidation, is first chemically synthesized by addition of one equiv. of Br2 in benzene solution. The detailed magnetic properties are well characterized by EPR zero-field splitting (D), paramagnetic NMR analyses and DFT calculations to elucidate the electron configuration from two plausible states with similar spin distributions in ring macrocycle to be Ni(III) low-spin (dxy2dxz,yz4dz21dx2-y20, S =1/2) orthogonally couple

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14

Sharma, Ajay. "Magnetization, Magnetotransport And Electron Magnetic Resonance Studies Of Certain Doped Rare Earth Manganites." Thesis, 2007. https://etd.iisc.ac.in/handle/2005/609.

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Study of rare-earth manganites has been a very active research area in the last few years in condensed matter physics. This is due to the interesting phenomena such as (1) colossal magneto resistance (2) charge, orbital and spin ordering and (3) phase separation exhibited by these materials as a function of doping, pressure and temperature [1-3]. There is a lot of experimental data available in literature on different doped manganites, but no satisfactory and complete theoretical understanding is available yet. Though different theoretical models proposed are able to explain certain individual

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15

Sharma, Ajay. "Magnetization, Magnetotransport And Electron Magnetic Resonance Studies Of Certain Doped Rare Earth Manganites." Thesis, 2007. http://hdl.handle.net/2005/609.

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Study of rare-earth manganites has been a very active research area in the last few years in condensed matter physics. This is due to the interesting phenomena such as (1) colossal magneto resistance (2) charge, orbital and spin ordering and (3) phase separation exhibited by these materials as a function of doping, pressure and temperature [1-3]. There is a lot of experimental data available in literature on different doped manganites, but no satisfactory and complete theoretical understanding is available yet. Though different theoretical models proposed are able to explain certain individual

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