Amino Acid Complexes of Rhodium(III) (open access)

Amino Acid Complexes of Rhodium(III)

This thesis will explore and study rhodium, a group VIII element that has rarely been studied.
Date: August 1965
Creator: Waller, James F.
System: The UNT Digital Library
Base Effects on the Thermal Decomposition of Sec-butyllithium Solutions (open access)

Base Effects on the Thermal Decomposition of Sec-butyllithium Solutions

The pyrolysis of sec-butyllithium in solution was studied in an attempt to understand the loss of stereo-specificity and the atypical kinetics that have been reported. Additionally, the effect of added lithium alkoxides was studied to determine their effects on the highly reactive sec-butyllithium substrate.
Date: June 1966
Creator: Adams, George Michael
System: The UNT Digital Library
Bonding Studies on Organolithium Compounds (open access)

Bonding Studies on Organolithium Compounds

This study is concerned with the nature of the relatively unusual bonding which occurs in organolithium compounds as a direct result of the oligomerization and possible explanations for that bonding.
Date: August 1968
Creator: Peyton, Gary
System: The UNT Digital Library
Conformationally Stable Cyclohexyllithium Compounds (open access)

Conformationally Stable Cyclohexyllithium Compounds

Organolitnium compounds have been employed in synthetic worK for many years. However only during the last decade has much progress been made in establishing the mechanistic pathways for the reactions of these compounds.
Date: January 1968
Creator: Selman, Charles Melvin
System: The UNT Digital Library
Corrosion Inhibition with Quaternary Amines (open access)

Corrosion Inhibition with Quaternary Amines

This thesis describes experiments made to test the corrosion inhibition of quaternary amines on steel.
Date: August 1969
Creator: Raiszadeh, Habib
System: The UNT Digital Library
The Coupling Mechanism in the Organolithium-Organic Monofluoride Reaction (open access)

The Coupling Mechanism in the Organolithium-Organic Monofluoride Reaction

In this work, the principal concern will be with the coupling reaction and it is anticipated that the other reactions referred to above will be considered further when products of the RX-R'Li reactions are discussed.
Date: May 1964
Creator: Carl, William P.
System: The UNT Digital Library
Cycloadditions of Dichloroketene (open access)

Cycloadditions of Dichloroketene

An investigation of the cycloaddition behavior of dichloroketene with various types of olefins seemed in order to determine if dichloroketene behaved similarly to dialkylketenes. It was anticipated that a study of this type would indicate the reactivity of dichloroketene to various types of olefinic compounds and thus establish if the ease of cycloaddition with dichloroketene parallels the nucleophilicity of the olefin as it does in dialkylketenes.
Date: June 1967
Creator: Waters, Oralee Hurst
System: The UNT Digital Library
Diffusion of Na²² in the Molten PbCl₂-NaCl System (open access)

Diffusion of Na²² in the Molten PbCl₂-NaCl System

The object of this thesis is to establish the diffusion coefficient of Na ion in PbCl2-NaCl mixtures and to compare its relationship to the other species.
Date: August 1962
Creator: Yin, Shang-ming Helen
System: The UNT Digital Library
Diffusion of Pb210 and Cl36 in the Molten PbCl2-NaCl System (open access)

Diffusion of Pb210 and Cl36 in the Molten PbCl2-NaCl System

Since 1955 research has been conducted at North Texas State College on diffusion in molten salts. The object of this work was a continuation of the diffusion studies, specifically the diffusion of Pb210 and Cl36 in molten PbCl2-NaCl mixtures.
Date: August 1960
Creator: Wimberley, Jerry Wayne
System: The UNT Digital Library
Discontinuous Thermal Expansions and Phase Transformations in Crystals at Higher Temperatures (open access)

Discontinuous Thermal Expansions and Phase Transformations in Crystals at Higher Temperatures

The purpose of this investigation is to make more detailed studies of transformations. Fourteen compounds have been examined by high temperature X-ray diffraction for this purpose. The investigations have been carried out in such a way as to reveal: 1. the existence of transformations, 2. the influence of polarizability on thermal expansion, 3. the anisotropy of expansion, and 4. the discontinuity of thermal expansion.
Date: 1967
Creator: Hsu, Yuan Tsun
System: The UNT Digital Library
The Dropping Gallium Electrode in Fused Salts (open access)

The Dropping Gallium Electrode in Fused Salts

This paper is an attempt to appraise the usefulness of the dropping gallium electrode (DGE) in fused LiNO3-KNO3, to compare it with the dropping mercury electrode (DME), and to study the DGE in fused LiCl-KCl.
Date: January 1966
Creator: Dickie, D. Kent
System: The UNT Digital Library
The Electrochemical Properties of the Mercury/lithium Nitrate-potassium Nitrate Eutectic Interface (open access)

The Electrochemical Properties of the Mercury/lithium Nitrate-potassium Nitrate Eutectic Interface

The original purpose of this investigation was to attempt to apply the coulostatic method directly to a molten salt system. The inability to duplicate the reported capacity data for this system resulted in an investigation of the probable cause of this discrepancy between the data obtained by these different methods (14, 15).
Date: August 1968
Creator: Flinn, David R.
System: The UNT Digital Library
Electrodeless Discharge of Isopropyl Alcohol (open access)

Electrodeless Discharge of Isopropyl Alcohol

Gases at satisfactory pressures fluoresce in the presence of radio frequency radiation (6). Such fluorescent gases have been used to probe fields of radio frequency oscillation and their emission spectra have been recorded and studied. Ions with multiple charges also exist in these gases, (6). In 1941 Oliver (12) observed the fluorescence of an isobutane- isobutene gaseous mix flowing to a pump through a glass tube which was wrapped by a spiral antenna of a sevenmegacycle transmitter. A white deposit was noticed at a bend in the tubing on the pump side of the fluorescing section of the gas (12, p. 8). In 1957 Blacknall (3) studied the fluorescence and reaction products of propylene in the antenna region of sevenmega- cycle radiation, The oscillator employed by Blacknall was an ARC-5/T-22 military surplus transmitter of range 7.00 to 9.10 megacycles, which he operated at 7.00 megacycles. Blacknall observed a drop in pressure and the formation of a brown deposit in the region of the coil. Blacknall did not report an analysis of this product. In 1959 Armstrong (1) repeated Blacknall's experiments and modified Blacknall's apparatus into an improved design. He also performed an analysis on Blacknall's product. Blacknall used a vertical …
Date: August 1965
Creator: Bryant, Franklin Delano
System: The UNT Digital Library
Electronic Effects in Dihaloketenes (open access)

Electronic Effects in Dihaloketenes

The objective of this investigation was to determine the electronic effects of the halogen atoms in dihaloketenes such as dichloroketene and dibromoketene.
Date: August 1966
Creator: Vaughn, Walter L.
System: The UNT Digital Library
Infrared Studies of Anions of Barbituric Acids (open access)

Infrared Studies of Anions of Barbituric Acids

As long ago as 1881, it was realized that a functional group of atoms in a molecule would cause an absorption band to appear at a particular frequency in the infrared spectrum of the molecule. In more recent years, the concept of characteristic group frequencies has become firmly established and has resulted in the present widespread use of infrared spectroscopy. There appear to have been relatively few studies of infrared absorption of organic acids as compared with their salts.
Date: August 1960
Creator: Barnhart, Richard Lee
System: The UNT Digital Library
Infrared Studies of Anions of Organic Acids (open access)

Infrared Studies of Anions of Organic Acids

The present work is a part of a systematic investigation of the frequency shifts in infrared absorption produced by changing to the anions carbonyl containing acidic compounds.
Date: August 1962
Creator: Dyke, Maurice Arthur
System: The UNT Digital Library
An Infrared Study of some Ω-Phenyl and Ω-Benzoyl Alkanoic Acids (open access)

An Infrared Study of some Ω-Phenyl and Ω-Benzoyl Alkanoic Acids

There is no available information in the literature on interaction between carboxyl hydrogen and ω-phenyl groups. Consequently, it was of interest to seek such interactions. Some form of interaction is evident from the study of the spectra of some phenylalkanoic acids and benzoyalkanoic acids.
Date: August 1963
Creator: Chanslor, Robert Janes
System: The UNT Digital Library
Intermediates for Paracyclophane Synthesis (open access)

Intermediates for Paracyclophane Synthesis

It is proposed in this thesis that the imperfect systems of Cram and of Schubert be combined with some modifications.
Date: August 1962
Creator: Lin, Ying-tsung
System: The UNT Digital Library
Kinetics and Mechanism Study of Diphenylketene Cycloadditions (open access)

Kinetics and Mechanism Study of Diphenylketene Cycloadditions

From a review of the published work in the field of cycloadditions, it is evident that further research is needed to establish the mechanism of ketene cycloadditions. This work was initiated with the intent of obtaining kinetic data which will contribute to the elucidation of the mechanism of ketene cycloadditions.
Date: August 1967
Creator: O'Neal, Hubert Ronald
System: The UNT Digital Library
Magnetic Exchange in Oxovanadium(IV) Complexes with N-Salicylideneamino Acids (open access)

Magnetic Exchange in Oxovanadium(IV) Complexes with N-Salicylideneamino Acids

Copper(II) and oxovanadium(IV) ions resemble one another magnetically in having one unpaired electron in their complexes irrespective of their geometrical structures and bond types involved. Copper(II) complexes with antiferromagnetic exchange are well known. On the contrary, antiferromagnetic exchange in oxovanadium(IV) complexes is rather new and not well established. Very few oxovanadium(IV) complexes have been reported to have this anomalous magnetic property. In the investigation of the magnetic properties of oxovanadium(IV) complexes, we have successfully prepared two series of new oxovanadium(IV) complexes with N-salicylideneamino acids.
Date: January 1968
Creator: Hu, James Hung-Jen
System: The UNT Digital Library
Metal Complexes of 2,3-Quinoxalinedithiol (open access)

Metal Complexes of 2,3-Quinoxalinedithiol

A series of new planar complexes with the dianion of 2,3-quinoxalinedithiol ligand has been prepared. The complexes have been characterized from the study of their analyses, magnetic moment, conductance, polarograms, electron spin resonance spectra, and electronic spectra, and compared with the available data on the corresponding maleonitriledithiolene and toluene-3,4-dithiolene complexes.
Date: May 1969
Creator: Ganguli, Kalyan Kumar, 1912-
System: The UNT Digital Library
Metal (II) Complexes with N-Salicylideneamino Acids (open access)

Metal (II) Complexes with N-Salicylideneamino Acids

Transition metal complexes derived from Schiff bases have rendered an important contribution to the development of modern coordination chemistry. Various stable compounds have been prepared having synthetic, biological, and physicochemical interest. In particular, complexes of salicylaldimines, B-ketoamines, and closely related ligand systems have been investigated.
Date: August 1969
Creator: Carlisle, Gene Ozelle
System: The UNT Digital Library
Naphth [2,3-d] Imidazoline-2,4,9-Triones (open access)

Naphth [2,3-d] Imidazoline-2,4,9-Triones

The study of some acylurea derivatives of 2-amino-3-alkylamino- and -3-arylamino-1,4-naphthoquinones was undertaken to determine the course of reaction under conditions similar to those used by J. R. Hoover and A. R. Day to prepare 2-alkyl-1H-naphth[2,3-d] imidazole-4.9-diones from 2-acylamino-3-amino-1,4-naphthoquinones.
Date: August 1966
Creator: Witkowski, Joseph T.
System: The UNT Digital Library
Nuclear Magnetic Resonance Spectra of Some 1,2,4-triazoles (open access)

Nuclear Magnetic Resonance Spectra of Some 1,2,4-triazoles

In the work undertaken here, NMR has been used to ascertain the structure of some 1,2,4-triazoles. The investigation provides information concerning the structure of potentially tautomeric triazoles such as hydroxy- and aminotriazole. Connected with this aspect of triazole chemistry is the larger problem of mesohydric tautomerism. The present study also yields information for a comparison of substituent effects in triazoles, N-heteroaromatic substances and benzene.
Date: January 1967
Creator: Creagh, Linda Truitt
System: The UNT Digital Library