Discontinuous Thermal Expansions and Phase Transformations in Crystals at Higher Temperatures

Discontinuous Thermal Expansions and Phase Transformations in Crystals at Higher Temperatures

Date: 1967
Creator: Hsu, Yuan Tsun
Description: 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.
Contributing Partner: UNT Libraries
Thermodynamic and Structural Studies of Layered Double Hydroxides

Thermodynamic and Structural Studies of Layered Double Hydroxides

Date: May 1998
Creator: Boclair, Joseph W. (Joseph Walter)
Description: The preparation of layered double hydroxides via titration with sodium hydroxide was thoroughly investigated for a number of M(II)/M(III) combinations. These titration curves were examined and used to calculate nominal solubility product constants and other thermodynamic quantities for the various LDH chloride systems.
Contributing Partner: UNT Libraries
A Comparative Quantitative Study of the Common Elements Found in the Hackenberry

A Comparative Quantitative Study of the Common Elements Found in the Hackenberry

Date: June 1939
Creator: Bailey, Duward W.
Description: This comparative study attempts to determine the importance of soil fertility in determining how much of an element a plant absorbs.
Contributing Partner: UNT Libraries
Electrodeposition of Cadmium

Electrodeposition of Cadmium

Date: August 1939
Creator: Bond, T. Jackson
Description: This thesis presents findings of experiments conducted to determine the most feasible method to electroplate metal.
Contributing Partner: UNT Libraries
The Electrodeposition of Zinc

The Electrodeposition of Zinc

Date: August 1939
Creator: Flanagin, Charles E.
Description: This thesis examines the use of zinc for electroplating and compares its use to other metals. Experiments conducted to gather data indicated circumstances which resulted in optimal results.
Contributing Partner: UNT Libraries
ESR Studies of Group IV Substituted Anilines

ESR Studies of Group IV Substituted Anilines

Date: June 1970
Creator: Wong, Pui-Suen
Description: The purpose of the investigation described herein was to investigate the degree of delocalization of the unpaired electron in ion radicals formed in the oxidation process of compounds with aromatic rings connected by means of various groups and atoms not entering the ring; then, to establish the relationship of coupling constants in radical cations with substituent σ values. The parent cation radical, in which the co-planar ion was derived from N,N-dimethylaniline, was selected in order to maximize the substituent effects on coupling constants and to obtain couplings at several positions (specifically, CH3, N, and ring protons).
Contributing Partner: UNT Libraries
Oxovanadium(IV) Complexes of Substituted N-(2-Thiophenyl)Salicylideneimine

Oxovanadium(IV) Complexes of Substituted N-(2-Thiophenyl)Salicylideneimine

Date: June 1970
Creator: Lee, Cheng Chang
Description: In an effort to study the spectral, magnetic, and stereochemical properties of vanadyl complexes, both a new series of vanadyl complexes derived from type (VII) ligands with subnormal magnetic moment and from type (VIII) ligands with normal magnetic moment are synthesized and characterized.
Contributing Partner: UNT Libraries
Hydantoins as Anticonvulsants. V. 5-Substituted-Amino Derivatives of 5-Phenylhydantoin

Hydantoins as Anticonvulsants. V. 5-Substituted-Amino Derivatives of 5-Phenylhydantoin

Date: August 1950
Creator: Jeanes, Dewey Perry
Description: This thesis describes the preparation of 5-substituted-amino derivatives of 5-phenylhydantoin. The hydantoin derivatives are to be tested for anticonvulsant activity by the Pharmacology Department of the Eli Lilly Company of Indianapolis, Indiana.
Contributing Partner: UNT Libraries
Synthesis of 1-Amino-2-Hydroxycyclopentanecarboxylic Acid

Synthesis of 1-Amino-2-Hydroxycyclopentanecarboxylic Acid

Date: December 1970
Creator: Huddle, John David
Description: This investigation involved the synthesis of 1-amino-2-hydroxycyclopentanecarboxylic acid, a potential structural analog of the natural amino acids, serine and threonine. The title compound also includes the structural features present in an established antitumor agent, cycloleucine.
Contributing Partner: UNT Libraries
Kinetic Studies and Vibrational Spectra of Disubstituted Metal Carbonyls

Kinetic Studies and Vibrational Spectra of Disubstituted Metal Carbonyls

Date: May 1972
Creator: Jernigan, Robert Thorne
Description: The oxidative elimination reactions of (5-X-phen)Mo(C0)₄ (X = H, CH₃, Cl, NO₂; phen = o-phenanthroline) and (3,4,7,8-(CH₃)₄-phen)Mo(CO)₄ with mercuric chloride in acetone have been investigated. In these reactions, a carbon monoxide group is replaced by two univalent ligands, accompanied by the corresponding increase in coordination number and formal oxidation state of the central metal atom, to give products of the type, (X-phen)Mo(CO)₃(Cl)HgCl. With the exception of (3,4,7,8-(CH₃)₄-phen), the substituted o-phenanthrolines were selected so as to minimize steric differences from one substrate to another while obtaining the widest range of pKₐ of the ligand.
Contributing Partner: UNT Libraries
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