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Pyridine complexes of cobalt (II) isothiocyante in non-aqueous solvents : a thermodynamic study.Simmons, Gloria Janet. January 1968 (has links)
No description available.
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The 4-propylpyridine complexes of cobalt (II) isothiocyanate in nonaqueous solutions : a thermodynamic study.Wong, Joseph Yik Nang. January 1968 (has links)
No description available.
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The 4-propylpyridine complexes of cobalt (II) isothiocyanate in nonaqueous solutions : a thermodynamic study.Wong, Joseph Yik Nang. January 1968 (has links)
No description available.
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Pyridine complexes of cobalt (II) isothiocyante in non-aqueous solvents : a thermodynamic study.Simmons, Gloria Janet. January 1968 (has links)
No description available.
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The chemistry of Bis(pentafluorophenyl)(n⁶-toluene)cobalt(II) : arene displacements and exchange reactionsBrezinski, Michael M January 2011 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries
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Cobalt-59 NMR studies of cobalt complexes.January 1994 (has links)
by Ho Kai Wing Kevin. / Thesis (M.Phil.)--Chinese University of Hong Kong, 1994. / Includes bibliographical references (leaves 94-98). / ABSTRACT --- p.iv / ACKNOWLEDGEMENTS --- p.vi / Chapter CHAPTER ONE: --- INTRODUCTION --- p.1 / Chapter 1.1 --- Basic Co-NMR Theory --- p.1 / Chapter 1.2 --- Method Employed --- p.5 / Chapter 1.2.1 --- Solvent Dependent Studies on Cobalt(III) complexes using 59Co NMR Spectroscopy --- p.5 / Chapter 1.2.2 --- Relationship between δiso and NQCC of Cobalt(III) Complexes in Solid --- p.7 / Chapter 1.3 --- Donor Acceptor Interactions --- p.8 / Chapter 1.4 --- Objectives of this Thesis --- p.10 / Chapter CHAPTER TWO: --- EXPERIMENTAL --- p.11 / Chapter 2.1 --- Synthesis --- p.11 / Chapter 2.2 --- NMR Measurements --- p.13 / Chapter 2.2.1 --- 59Co NMR Measurements --- p.13 / Chapter 2.2.2 --- 13c NMR Measurements (T1 Measurements) --- p.14 / Chapter 2.3 --- Viscosity Measurements --- p.15 / Chapter 2.4 --- UV-Vis Spectral Measurements --- p.15 / Chapter CHAPTER THREE --- 59Co NMR STUDY OF MAGNETIC COBALT(III) COMPLEXES --- p.16 / Chapter 3.1 --- Solvent-Dependent Studies of Cobalt(III) Complexes --- p.16 / Chapter 3.1.1 --- "Study of [Co(en)3]Cl3 and cis, trans-[Co(en)2(N3)2]NO3" --- p.17 / Chapter 3.1.2 --- Study of trans- [Co(en)2(NH3)2]Cl3 and trans- [Co(en)2(N02)2]NO3 --- p.29 / Chapter 3.1.3 --- "Study of trans- Na[Co(acac)2 (N02)2],trans- [Co(acac)2(N02)(NH3)] and trans-[Co(acac)2(NH3)2]I" --- p.36 / Chapter 3.1.4 --- Summary --- p.48 / Chapter 3.2 --- "Simultaneous Determination of CSA, ic, and NQCC of Cobalt(III) complexes in Different Solvents" --- p.49 / Chapter 3.2.1 --- Method --- p.49 / Chapter 3.2.2 --- "Study of trans- Na[Co(acac)2(N02)2],trans- [Co(acac)2(N02)(NH3)] and trans-[Co(acac)2(NH3)2]I and trans-[Co(acac)2(MeNH2)2]I" --- p.52 / Chapter 3.2.3 --- Study of trans- [Co(en)2(N〇2)2]N03 and trans- [Co(en)2(NCS)2]NCS --- p.58 / Chapter 3.2.4 --- Study of trans- [Co(en)2(NH3)2]Cl3 and trans- [Co(en)2(N3)2]NO3 --- p.63 / Chapter 3.2.5 --- Summary --- p.68 / Chapter 3.3 --- Resolution of the d-d Electronic Transition Energies in Cobalt Complexes and its Application to the Donor-Acceptor Interactionsin Cobalt Complexes - Application of Equation 3.3.1 --- p.70 / Chapter 3.3.1 --- Method --- p.70 / Chapter 3.3.2 --- "Study of trans- [Co(en)2(N02)2]N03,trans- [Co(en)2(NCS)2]NCS, trans- [Co(en)2(N3)2]N03 and trans- [Co(en)2(NH3)2]Cl3" --- p.72 / Chapter 3.3.3 --- "Study of trans- Na[Co(acac)2(NO2)2],trans- [Co(acac)2(N02)(NH3)] and trans-[Co(acac)2(NH3)2]I" --- p.86 / Chapter CHAPTER FOUR --- CONCLUSION AND FUTURE WORKS --- p.92 / REFERENCES --- p.94
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The studies of the hydrogen bonding interaction for the supramolecular complex series by the Cobalt-59 NMR in solution and solid state and their DFT calculation. / CUHK electronic theses & dissertations collectionJanuary 1997 (has links)
by Zhou ping. / Thesis (Ph.D.)--Chinese University of Hong Kong, 1997. / Includes bibliographical references (p. 160-170). / Electronic reproduction. Hong Kong : Chinese University of Hong Kong, [2012] System requirements: Adobe Acrobat Reader. Available via World Wide Web. / Mode of access: World Wide Web.
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Séparation et analyse du ⁶⁰Co et du ⁶⁰Ni par spectrométrie de masse pour la datation de sources de radio-cobaltCharbonneau, Luc 18 April 2018 (has links)
Le radio-cobalt possède de multiples applications dans des domaines tels que la medicine, l'industrie alimentaire et la recherche. Cependant, le ⁶⁰Co pourrait être intégré à une arme de dispersion de poussières radioactives à des fins terroristes. Afin de prévenir une telle menace, il est important de développer des techniques radiochimiques permettant de faire la datation d'une source de ⁶⁰Co et de confirmer son origine, permettant de déterminer la légalité de la source saisie. Pour estimer l'âge d'une source, il est nécessaire de mesurer le ratio isotopique du ⁶⁰Co avec son produit de désintégration le ⁶⁰Ni. Étant donné que le ⁶⁰Ni est un isotope stable, seule la spectrométrie de masse peut être utilisée (ICP-MS). Les deux isotopes possédant le même ratio m/z, une séparation de haute performance est nécessaire afin d'extraire le ⁶⁰Ni de la matrice de radio-cobalt. Il est nécessaire de séparer une faible quantité de nickel dans une matrice très riche en cobalt. Pour effectuer cette séparation, deux approches ont été étudiées : la chromatographie de complexation et la chromatographie échangeuse d'ions. La chromatographie échangeuse d'anions est basée sur les travaux de Krauss et Moore et utilise la résine Dowex 1-X8 sous forme chlorure. L'autre technique est basée sur la complexation du nickel avec le diméthylglyxoime sur une colonne en milieu légèrement basique, celle-ci est commercialisée par la compagnie Eichrom. De plus, une méthodologie de mise en solution a été développée afin d'éviter la contamination de la source par la couche externe faite en nickel. Finalement une analyse complète des paramètres de 1TCP-MS en utilisant deux méthodes d'injection a été effectuée afin d'évaluer les limitations instrumentales pour l'analyse isotopique du ⁶⁰Ni.
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Desenvolvimento de um calorímetro com núcleo de água e de uma unidade de tratamento de líquidos para dosimetria de radiação gama / Development of a water calorimeter and a liquid treatment unit for gamma radiation dosimetryCINTRA, FELIPE B. de 22 November 2017 (has links)
Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-22T16:27:19Z
No. of bitstreams: 0 / Made available in DSpace on 2017-11-22T16:27:19Z (GMT). No. of bitstreams: 0 / Este trabalho consiste no desenvolvimento de um detector composto por um calorímetro com núcleo de água para dosimetria de feixes de 60Co e 137Cs com média intensidade. Além do calorímetro, foi também dimensionada a instrumentação, a metodologia de calibração e a medição de temperatura. O trabalho foi dividido em 4 etapas distintas: escolha do melhor projeto como base para desenvolvimento do calorímetro, dimensionamento de parâmetros e ajuste fino do projeto, construção e calibração. Durante o desenvolvimento deste trabalho foi construída uma Unidade de Tratamento de Água que permite a produção da água que o calorímetro emprega. Em seguida foi construído o calorímetro em sí com os conceitos das etapas anteriores. O equipamento foi testado tanto nas instalações da GMR quanto no CTR do IPEN, obtendo taxas de dose na água com fontes de 137Cs e 60Co com diversas atividades (3,3 TBq, 15,54 TBq e 7 TBq) e em algumas distâncias. Foram obtidas taxas de dose que variavam de 2 mGy/s até 15 mGy/s, dependendo do tipo de fonte e SDD escolhida. O projeto contou com simulações de códigos como MCNP5 e FLUENT 14 e foram essenciais na construção do equipamento. O objetivo deste trabalho foi aprimorar a infraestrutura do LCI, desenvolvendo um detector que deverá aumentar a gama dos serviços prestados pelo LCI com um tipo de medição dosimétrica ainda inexistente no país. / Tese (Doutorado em Tecnologia Nuclear) / IPEN/T / Instituto de Pesquisas Energéticas e Nucleares - IPEN-CNEN/SP
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