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Sunday, August 2, 2020 | History

2 edition of Nuclear spin relaxation studies of electrolyte solutions. found in the catalog.

Nuclear spin relaxation studies of electrolyte solutions.

Michael St. John Arnold

Nuclear spin relaxation studies of electrolyte solutions.

by Michael St. John Arnold

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  • 16 Currently reading

Published by University of East Anglia in Norwich .
Written in English


Edition Notes

Thesis (Ph.D.) - University of East Anglia, School of Chemical Sciences, 1967.

ID Numbers
Open LibraryOL13844782M

The equilibrium constant for the dissociation of the BeF₄˭ ion in aqueous solutions of the ammonium salt has been computed by using the intensities of the fluorine nuclear magnetic resonance signals to indicate the concentrations of the three species at equilibrium. The simple dissociation may be represented as; BeF₄˭⇢ BeF₃¯+ F¯ (i) KE = ± x 10¯²moles (Kg)¯¹at 33°C. The spin-lattice and spin-spin relaxation times of ^7Li(spin = 3/2) have also been measured. The solvation number of ^7 Li was obtained from the variations of the chemical shifts due to concentration. Raman spectra of tetrafluoroborate and thiocyanate formamide solutions have given a good evidence for the anion solvation.

The widespread use of energy storage for commercial products and services have led to great advancements in the field of lithium-based battery research. In particular, solid state lithium batteries show great promise for future commercial use, as solid electrolytes safely allow for the use of lithium-metal anodes, which can significantly increase the total energy density. Selective and non-selective spin–lattice relaxation times (T 1), nuclear Overhauser enhancements (NOE), and rates of exchange of protons in bilirubin and related compounds in chloroform solutions were NOE observed between methyl and methine protons and between lactam and pyrrole NH protons indicate that the configuration within the pyrromethenone units is exclusively syn-Z.

Nuclear magnetic resonance (NMR) is a physical phenomenon in which nuclei in a strong constant magnetic field are perturbed by a weak oscillating magnetic field (in the near field) and respond by producing an electromagnetic signal with a frequency characteristic of the magnetic field at the process occurs near resonance, when the oscillation frequency matches the intrinsic.   Spin and Magnetic Properties. The nucleus consists of elementary particles called neutrons and protons, which contain an intrinsic property called electrons, the spin of a nucleus can be described using quantum numbers of I for the spin and m for the spin in a magnetic field. Atomic nuclei with even numbers of protons and neutrons have zero spin and all the other atoms with odd.


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Nuclear spin relaxation studies of electrolyte solutions by Michael St. John Arnold Download PDF EPUB FB2

In recent years, nuclear magnetic resonance spectroscopy has been applied to the study of interactions in solution with profitable results. This has been especially the case with studies of ionic hydra­tion in electrolyte solutions where magnetic resonance and relaxa­tion techniques have been by: 3.

Nuclear magnetic resonance (NMR) is widely used across many fields of science because of the rich data it produces, and some of the most valuable data come from studies of nuclear spin relaxation in solution.

The first edition of this book, published more than a decade ago, provided an accessible and cohesive treatment of the field.5/5(1).

Journals & Books; Help Download full text in PDF Download. Share. Export. Advanced. Progress in Nuclear Magnetic Resonance Spectroscopy. Volume 4,Pages Chapter 4 Nuclear magnetic resonance studies of electrolyte solutions. Author links open overlay panel C. Deverell 1.

Show more. https: Cited by: Abstract. The dynamic properties of water molecules coordinated to the ions Li + and F − in undercooled LiCl and KF solutions have been investigated with NMR. Relaxation time studies at low temperatures provide details of molecular motions as well as certain features of the local arrangement in the coordination sphere of these by: 1.

Nuclear magnetic relaxation studies of preferential solvation in electrolyte solutions. Another indirect method using only solvent magnetic interactions For reproduction of material from all other RSC journals and books: Nuclear magnetic relaxation studies of preferential solvation in electrolyte solutions.

Another indirect method using. Effect of O2 on the nuclear spin relaxation rates of the Tl+ ion in aqueous solution. Journal of Magnetic Resonance ()28 (1), DOI: /(77) H. Langer, H.

Hertz. The Structure of the First Hydration Sphere of Ions in Electrolyte Solutions A Nuclear Magnetic Relaxation Study. Nuclear magnetic resonance (NMR) is widely used across many fields of science because of the rich data it produces, and some of the most valuable data come from studies of nuclear spin relaxation in solution.

The first edition of this book, published more than a decade ago, provided an accessible and cohesive treatment of the field. The phenomenology of electrical relaxation in superionic glasses and their melts, and in salt-in-polymer electrolytes is reviewed, and then recent observations on nuclear spin lattice relaxation of mobile species like 7 Li + are examined in the same conceptual frame work are examined.

To shed light on the origin of difference found in superionic glasses between the correlation times, τ c, for. The phenomenology of electrical relaxation in superionic glasses and their melts, and in salt-in-polymer electrolytes is reviewed, and then recent observations on nuclear spin lattice relaxation of mobile species like 7 Li + are examined in the same conceptual frame work are examined.

To shed light on the origin of difference found in superionic glasses between the correlation times, τ c. Pulsed NMR studies of water in striated muscle. Transverse nuclear spin relaxation times and freezing effects.

Biochim Biophys Acta. Nov 24; (1)– Hollis DP, Economou JS, Parks LC, Eggleston JC, Saryan LA, Czeister JL. Nuclear magnetic resonance studies of several experimental and human malignant tumors.

A comparison was made by performing the ESR linewidth and saturation studies to obtain values of W e, the electron spin–lattice relaxation probability, and W n, the nuclear spin‐relaxation probability and then using this information to predict the observed ENDOR relaxation parameters in terms of the theory.

Nuclear magnetic resonance (NMR) is widely used across many fields because of the rich data it produces, and some of the most valuable data come from the study of nuclear spin relaxation in solution.

While described to varying degrees in all major NMR books, spin relaxation is often perceived as a difficult, if not obscure, topic, and an accessible. The differences between the nuclear spin energy levels are relatively small and therefore, the relaxation from high to low energy level after excitation is.

Deuteron spin–lattice T1 and spin–spin T2 relaxation times have been measured at 10 MHz in aqueous (D2O) solutions of lithium chloride as a function of concentration (R= to mol D2O per. Nuclear magnetic resonance (NMR) is widely used across many fields because of the rich data it produces, and some of the most valuable data come from the study of nuclear spin relaxation in solution.

While described to varying degrees in all major NMR books, spin relaxation is often perceived as a difficult, if not obscure, topic, and an Reviews: 1. Conformational flexibility of luteinizing hormone-releasing hormone in aqueous solution.

Carbon spin-lattice relaxation time study. Biochemistry14 (19), DOI: /bia Ian C. Smith, Harold J. Jennings, and Roxanne Deslauriers. The two important quantities are the relaxation time T 1, describing the energy transfer from the nuclear spin system to the whole of the sample, representing the heat reservoir, and the.

The longitudinal (or spin-lattice) relaxation time T 1 is the decay constant for the recovery of the z component of the nuclear spin magnetization, M z, towards its thermal equilibrium value.In general, =, − [, − ()] − /In specific cases: If M has been tilted into the xy plane, then () = and the recovery is simply =, (− − /)i.e.

the magnetization recovers to 63% of its equilibrium. The hexagonal (E) phase in the sodium dodecyl sulphate (SDS)/decanol/water system is investigated by 2H and 23Na nuclear magnetic resonance (NMR) of the selectively deuterated SDS and the sodium counterion.

Using macroscopically oriented E phase samples, prepared from the magnetically aligned nematic (NC) phase, we measure the orientation‐dependent relaxation rates R1Z and R1Q as well as. Dynamic nuclear polarisation (DNP) is a promising approach that exploits the ~10 3 times greater gyromagnetic ratio of paramagnetic electrons to hyperpolarise nuclear.

Nuclear magnetic resonance (NMR) is used across many fields because of the rich data it produces, and some of the most valuable data come from the study of nuclear spin relaxation in solution.

This book clarifies the nature of the phenomenon, shows how to study it, and explains why such studies ."Nuclear magnetic resonance (NMR) is widely used because of the rich data it produces, and some of the most valuable data come from the study of nuclear spin relaxation in solution.

This book clarifies the nature of the phenomenon, shows how to study it, and explains why such studies are worthwhile.The relaxation of nuclear spins at high magnetic fields, on the other hand, is governed by fluctuations of NMR interac- In this thesis, we recorded self-diffusion coefficients and 7Li relaxation rates for two polymer electrolytes: LiTFSI in polyethylene oxide (PEO) and in a block- Relaxation of nuclear spins to study molecular.