Physical Sciences and Mathematics Commons^™

A Study Of The Reactions Of Alkali Metals With Alcohol In Liquid Ammonia, Eugene Joseph Kelly

Doctoral Dissertations

Introduction: This thesis embodies the results of research performed under a contract between the University of Tennessee and the United States Atomic Energy Commission, the contract calling for an examination of certain chemical separation factors for the isotopes of hydrogen.

The investigation was centered on a study of the fractionation of the isotopes protium (hereafter called hydrogen) and tritium through the reaction of a weak acid with metal. The reactions were carried out in a homogeneous system with liquid ammonia serving as solvent for the reactants.

A Study Of The Heat Effects At Electrodes During Electrolysis, Howard Frank Holmes

Doctoral Dissertations

Temperature difference measurements were made during the electrolysis of aqueous copper sulfate between copper electrodes. The temperature differences measured were those between the cathode and the anode, the cathode solution, and the anode and the solution. These values were obtained as a function of the time of the electrolysis. The variation of these differences with time and their magnitudes were explained in terms of the entropy changes occurring at the electrodes, resistance, and polarization.

The effect of some inert electrolytes on these temperature differences was determined as was the effect of gelatin. Explanations for these effects were given in terms …

A Study Of The Reduction Of Certain 1-Substituted Naphthalenes By Alkali Metals In Liquid Ammonia, Gerald Titus Davis

Doctoral Dissertations

(From the Introduction)

The first phase of the work to ·be presented was aimed at studying the conditions under which 1-aminonaphthalene is efficiently reduced to the 5,8-dihydro derivative and thereby finding experimental evidence which would be of value in the selection of a mechanism for the reduction. After the initial work, the study was extended to include the reduction of other 1-substituted naphthalenes.

Synthesis Of 7-(Dialkylaminoalkyl)-Benzo [C] Phenothiazines; The Metalation Of 7h-Benzo [C] Phenothiazine With N-Butyllithium, William Earl Tatum

Doctoral Dissertations

Introduction: Phenothiazine is one of the more widely investigated heterocyclic molecules known to modern chemistry. The founding of the synthetic dye industry in the latter part of the nineteenth century stimulated many new fields of organic research, one of which was phenothiazine chemistry. Bernthsen, known as father of phenothiazine chemistry, first synthesized (1) this compound in 1883, after suspecting its presence in the nucleus of the methylene blue dyes.

Since that time phenothiazine and its derivatives have found uses as antioxidants (2), antihistamines (3), antiemetics (4), and in the treatment of Parkinson's disease (5). During the past decade, considerable attention …

Spectral Theory Of Self-Adjoint Ordinary Differential Operators, Charles C. Oehring

Doctoral Dissertations

Introduction: Many of the properties of the ordinary Fourier series expansion of a given function are shared by the orthogonal expansion in terms of eigenfunctions of a second order ordinary differential operator. Let p = p(x) and q = q(x) be real-valued functions such that p, p', and q are continuous, and p(x) > 0, on a finite interval a ≤ x ≤ b. Let λ be a complex parameter. The classical Strum-Liouville theory [9, section 27; 4, Chapter 7; 21, Chapter 1]¹ is concerned with solutions of the differential equation -(py') + qy = λ, which satisfy certain real …

The Use Of The Neutral Bis-Cyclopentadienyl Metal Compounds Of Iron, Cobalt, And Nickel In The Catalysis Or Hydrogen­Ation Reactions, Andrew Jackson Chadwell Jr.

Doctoral Dissertations

The neutral bis-cyclopentadienyl metal compounds of iron, cobalt, and nickel were prepared and studied as possible sources of catalytically active iron, cobalt, and nickel. Nickelocene and cobaltocene are re­duced to the free metal and cyclopentane in cyclohexane solution with hydrogen in the absence of a catalyst using hydrogen at 1000 psi. The reduction of nickelocene takes place at 60°, and the reduction o! cobaltocene occurs at 160-170°. Induction periods were observed. The hydrogen reduction of ferrocene was not achieved. The hydrogenation reactions of benzene , cyclohexene , acetone , ethyl laurate , nitrobenzene , and nitroethane were studied with nickelocene …

Studies Of The Solvent Extraction Of Cadmium And Silver Dithizonates, Frank Falkoner Dyer

Doctoral Dissertations

(From the Summary)

Studies of masked and non-masked extractions of cadmium and silver dithizonates have been made from aqueous solutions into various organic solvents containing dithizone. The term, masked extraction, was used to designate extractions from aqueous solutions containing chemical species which complex with the ions of silver and cadmium. The term, non-masked extraction, was applied to extractions from aqueous solutions containing the perchlorate ion which was assumed not to form complexes with the ions of silver and cadmium. Cadmium dithizonate extractions were made from aqueous solutions into chloroform, and silver dithizonate extractions were made from aqueous solutions …

The Infrared Spectrum Of Formyl Fluoride, Roy Franklin Stratton

Doctoral Dissertations

Nine bands were observed in HOOF and thirteen DCOF. A rotational analysis was completed on five of the fundamental bands in each molecule. The ground state moments of inertia are internally consistent. The value of B which is quoted is actually B̅ = 1/2 (B+C). As the symmetric top approximation is used throughout, no information was obtained about the actual values of B and C themselves. We know, however, that they cannot differ by very much because symmetric top approximation gives consistent results.

The moment of inertia were used to determine the approximate position of the hydrogen atom. The moments …

Preparation Of Compounds Of Potential Physiological Activity: Amino And Thio Esters Of Substituted Benzilic And Glycolic Acids And Related Compounds, Dan Millard Glenn

Doctoral Dissertations

Interest in medicinal chemistry has been high during the last two decades all over the world, and particularly in the United States. It has been stimulated by improved methods of clinical diagnosis and the ensuing demands for new corrective and curative agents, by the need for better medicinals in the treatment of the growing number of aged individuals, by the urgency of wartime search for anti-infectious drugs, by the greater significance of pharmaceutical theories, and by the unpredicated expansion of the American pharmaceutical industry. The proof of the structure of most vitamins and of many internally secreted products and the …

Design And Construction Of A Vacuum-Grating Spectrograph For The Infrared, John Alva Herndon

Doctoral Dissertations

The Problem: At the time the work was begun, it was proposed that the system be designed to be as automatic as possible without restricting the versatility and resolving power of the instruments. The plan was to construct parts for both single and double pass instruments in so far as the parts were alike, and then to complete the single pass instrument and determine its characteristics before completing the double pass unit.

With the gratings now available the theoretical resolution limit of the single pass instrument should range from 0.075 cm^-1 to 0.030 cm^-1 depending on the angle …

An Investigation Of The Reduction Of Carbon-Carbon Unsaturation By Alkali Metals In Liquid Ammonia, Donald Richard Larkin

Doctoral Dissertations

Introduction: The properties of liquid ammonia are similar in many ways to those of water. Liquid ammonia has the very high specific heat of 1.10 calories per gram. Hydrogen bonding occurs to a considerable degree although not as extensively as in water. Evidence of hydrogen bonding as reflected in boiling points is shown in Table I. The dielectric constant is 22 at -33° which is also very high for a solvent which is comparatively inert to reactive metals. (Hexane has a dielectric constant of 1.87.) Liquid ammonia is a much better solvent for organic compounds than water. Even such large …

Preparation Of Compounds Of Potential Physiological Activity: Derivatives Of Benzilic, Substituted Acetic And Substituted Glycolic Acids And Substituted Butanones, Thomas Alexander Magee

Doctoral Dissertations

The continuing search of chemists, physiologists and medical researchers for natural and synthetic compounds which will alleviate or cure the illnesses of mankind constitutes a fascinating episode in the history of scientific endeavor. One chapter of this history is necessarily concerned with efforts to synthesize better, more useful antispasmodics. To present a comprehensive critical review of these efforts would require an extensive treatise and will not be attempted here. Several reviews are available which cover the literature to around 1950. The present survey will be a brief resume of the more pertinent material to the present time. It is hoped …

An Investigation Of Techniques For The Separation Of Hydrogen And Deuterium: Part I: Zone Refining Of Mixtures Of Ordinary And Heavy Water; Part Ii: The Reaction Of Iron With Mixtures Of Ordinary And Heavy Water; Part Iii: Gas Chromatography With Hydrogen And Deuterium Samples, Carl Owens Thomas

Doctoral Dissertations

The separation factor for a single fractional crystallization in the H₂O-D₂O system is much too small, and the required freezing rate is too slow for a batch process to give a useful separation of the isotopic forms of water. The purpose of this work was to continue some preliminary experiments on zone refining in the H₂O-D₂O system and to attempt to determine whether or not the technique would be useful for the separation of heavy water from ordinary water.

Some Properties Of Surface Films Formed By Adsorption Of N-Nonadecanoic Acid On Mechanically Activated Metal Surfaces, Tomlinson Fort Jr.

Doctoral Dissertations

The Problem: The work reported here is concerned with the adsorption of n-nonadecanoic acid onto freshly machined metal surfaces. The work done is a direct continuation of that begun by Smith and Allen and continued by McGill whose experimental techniques have largely been adopted. The investigation involves the adsorption of a typical polar organic molecule onto "clean" metal surfaces, prepared under rather rigidly controlled and unique conditions in a system from which the usual surface contaminants are believed to be absent. The purpose of these studies is to gain some insight into the properties of metal surfaces themselves, the …

Tame, Finite Complexes In Three-Space, P. H. Doyle Iii

Doctoral Dissertations

Introduction: A fundamental problem in topology of Euclidean n-space is to determine under what conditions two homeomorphic subsets of an n-space are strongly homeomorphic; that is, to determine when one can be carried onto the other by homeomorphism of space onto itself. This problem is of particular importance when one of the two subsets is a polyhedron.

Approximately Finite Geometries And Their Coordinate Rings, James Howard Alexander

Doctoral Dissertations

Introduction: Von Newmann [8]¹ has discovered a class of geometries in which the undefined elements are subspaces and the undefined operations are meets and joins of subspaces. His axioms require that the system consisting of the set ℒ of subspaces together with the two operations form an irreducible, complete, complemented, modular lattice satisfying an additional dual pair of continuity of conditions.

The Lateral Vibrations Of An Axially Rotating Bar, William C. Mccorkle Jr

Doctoral Dissertations

Introduction: It has long been known that the rotational motion of a bar or shaft at certain speeds is capbable of exciting lateral vibrations of the shaft. Almost invariably these vibrations are undesirable or even destructive, and for this reason considerable attention has been given to their study. The subject has a fairly extensive literature dating back to 1869 when Rankine^1,2 first treated the stability of a shaft, running true and in perfect balance, against small disturbances. His results were erroneous because he assumed that the plane of vibration always rotated with the shaft, which is equivalent to neglecting …

A Study Of The Catalytic Hydrogenation Of Methoxybenzenes Over Platinum And Rhodium Catalysts, Robert Gene Thompson

Doctoral Dissertations

[From the Summary]

The catalytic hydrogenation of methoxybenzenes and other aromatic methoxyl compounds has been studied. Hydrogenation of the aromatic ring was usually accompanied by some cleavage of the methoxyl groups. This cleavage occurred predominately upon the carbon-oxygen bond adjacent to the aromatic ring. The cleavage reaction was found to occur only as a part of the aromatic hydrogenation process. The amount of cleavage was found to be dependent upon the catalyst used. Platinum led to extensive methoxyl cleavage while rhodium catalyzed ring saturation with little cleavage. Also found to influence the extent of cleavage were reaction temperature …

The Thermodynamics Of Technetium And Its Compounds, James W. Cobble

Doctoral Dissertations

No abstract provided.

Geochemical Prospecting Applied To The Illinois-Kentucky Fluorspar Area, Matthew Peter Nackowski

Doctoral Dissertations

"This study was completed to determine whether geochemical methods of prospecting could be applied to the search for fluorspar deposits in the Illinois-Kentucky fluorspar district.

During the course of the study, aspects of the geochemical cycle of fluorine under the climatic environment encountered were noted in the zone of weathering.

The Illinois-Kentucky fluorspar district supplies a large portion of the fluorite consumed in the United States. The producing deposits are of two geologic types. The vein deposits occur as nearly vertical tabular lenses or pods which occupy fractures. These deposits may reach the bedrock surface, but in any case, the …

The Synthesis And Pharmacologic Activity Of Some Bis-(2-Aminoethyl)-Benzenes, Ching Chen Tung

Doctoral Dissertations

Introduction: The isolation of epinephrine from the medulla of the suprarenal gland and the discovery of its amazing therapeutic effects have stimulated intensive research on the synthesis of compounds possessing the basic skeleton of 2-aminoethyl-benzene. The investigation in the past forty years have culminated in the preparation of a large number of this type of amine which are pharmacologically classified as "sympatho-mimetic" or "pressor" agents because they generally act on the sympathetic nervous system and cause in increase of blood pressure. However, the 2-aminoethylbenzene derivatives most thoroughly studied have been those whose molecules possessed only one aminoethyl side chain per …

Pyrochemical Changes In Missouri Halloysite, Frank Joseph Zvanut

Doctoral Dissertations

"For centuries it has been known that the application of heat to a clay or a clay body produces changes that make it an entirely different substance from the original raw clay. Ever since the earliest civilizations produced crude building brick by baking formed clay bodies in the sun's rays, mankind has been speculating on the nature of the changes that convert soft, friable, plastic clays into hard, strong, non-plastic, rock-like masses. It has been only within the last two decades, however, that progress has been made in the solution of problems dealing with the resultant products in fired clay …