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Syntheses of a New C₂₂H₂₈ Cage Hydrocarbon System and 2,2- Tetramethylene-1 /4-Dibromobutane

Description: (1). An improved method for synthesizing bicyclo (2,2,1) hepta-2,5-diene-7-spiro-1'-cyclopentane (5) has been developed. Thermal reaction of compound (5) with neat iron pentacarbonyl under nitrogen atmosphere affords the corresponding cage dimer (6). Some aspects of the syntheses, spectra, and chemistry of compound (5) and (6) are discussed. (2). A structure isomer of decamethyldodecahedrane (C₃₀H₄₀), molecule (11), is expected to be synthesized via thermal reaction of iron carbonyl complexes w… more
Date: December 1984
Creator: Wu, An-hsiang
Partner: UNT Libraries
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Synthesis of Anthracyclines Related to Adriamycin

Description: This dissertation reports the preparation of several types of anthraquinones structurally related to adriamycin. It describes the synthesis of two types of 2-aminoquinizarin compounds. It also presents two new syntheses of a heterocyclic tetracyclic ring system, similar to the aglicone ring system of adriamycin. A series of 2-aminoquinizarins was prepared by adding several primary amines to quinizarin. Quinizarin was shown to be essentially inert toward secondary amines. Several secondary amine… more
Date: May 1981
Creator: White, Roger J.
Partner: UNT Libraries
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Extended Research on Detection of Deception Using Volatile Organic Compound (VOC) Emissions

Description: A system that captures and analyzes volatile organic compound (VOC) emissions from skin surfaces may offer a viable alternative method to the polygraph instrument currently in use for detecting deception in U.S. government settings. Like the involuntary autonomic central nervous system response data gathered during polygraph testing, VOC emissions from the skin may provide data that can be used to detect stress caused by deception. Detecting VOCs, then, may present a noninvasive, non-intrusive … more
Date: June 1, 2006
Creator: Studies, Center for Human Reliability
Partner: UNT Libraries Government Documents Department
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A low-power pressure-and temperature-programmed separation system for a micro gas chromatograph.

Description: This thesis presents the theory, design, fabrication and testing of the microvalves and columns necessary in a pressure- and temperature-programmed micro gas chromatograph ({micro}GC). Two microcolumn designs are investigated: a bonded Si-glass column having a rectangular cross section and a vapor-deposited silicon oxynitride (Sion) column having a roughly circular cross section. Both microcolumns contain integrated heaters and sensors for rapid, controlled heating. The 3.2 cm x 3.2 cm, 3 m-lon… more
Date: October 1, 2006
Creator: Sacks, Richard D. (University of Michigan, Ann Arbor, MI); Robinson, Alex Lockwood (Advanced Sensor Technologies, Albuquerque, NM); Lambertus, Gordon R. (University of Michigan, Ann Arbor, MI); Potkay, Joseph A. (University of Michigan, Ann Arbor, MI) & Wise, Kensall D. (University of Michigan, Ann Arbor, MI)
Partner: UNT Libraries Government Documents Department
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Investigation of hydrocarbon ignition

Description: From Summary: "Accurate spotaneous ignition temperatures have been determined for some 50 pure organic compounds. The effects of a wide variety of additives and of eight selected metals on the spontaneous-ignition-temperature values of representatives of this group also have been observed. Results are correlated with chemical structure and with antiknock characteristics where known; more fundamental aspects of the possible chain-breaking and chain-branching reactions involved are also considere… more
Date: January 1952
Creator: Frank, Charles E. & Blackham, Angus U.
Partner: UNT Libraries Government Documents Department
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Predicting the emission rate of volatile organic compounds from vinyl flooring

Description: A model for predicting the rate at which a volatile organic compound (VOC) is emitted from a diffusion-controlled material is validated for three contaminants (n-pentadecane, n-tetradecane, and phenol) found in vinyl flooring (VF). Model parameters are the initial VOC concentration in the material-phase (C{sub 0}), the material/air partition coefficient (K), and the material-phase diffusion coefficient (D). The model was verified by comparing predicted gas-phase concentrations to data obtained … more
Date: March 1, 2001
Creator: Cox, Steven S.; Little, John C. & Hodgson, Alfred T.
Partner: UNT Libraries Government Documents Department
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Development of an Experimental Database and Theories for Prediction of Thermodynamic Properties of Aqueous Electrolytes and Nonelectrolytes of Geochemical Significance at Supercritical Temperatures and Pressures

Description: The reactions that cause transformations in organic compounds in the Earth’s crust remain mysterious despite decades of research into how fossil fuel resources form. A major reason for this persistent mysteriousness is the failure of many researchers to realize the intimate involvement of water in those transformations. Our goal was to overcome this staggering ignorance by developing the means to calculate the consequences of reactions involving organic compounds and water. We pursued this rese… more
Date: February 2, 2007
Creator: Shock, Everett L.
Partner: UNT Libraries Government Documents Department
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Thermodynamic Properties of Organic Compounds. 2. Combustion and Sublimation Enthalpies of 2,4,6-Trimethylbenzonitrile N-Oxide

Description: Article discussing thermodynamic properties of organic compounds and combustion and sublimation enthalpies of 2,4,6-trimethylbenzonitrile N-oxide.
Date: January 1992
Creator: Acree, William E. (William Eugene); Simirsky, Vladimir V.; Kozyro, Alexander A.; Krasulin, Alexander P.; Kabo, Gennady J. & Frenkel, Michael L.
Partner: UNT College of Arts and Sciences
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Modeling the reversible sink effect in response to transient contaminant sources

Description: A physically based diffusion model is used to evaluate the sink effect of diffusion-controlled indoor materials and to predict the transient contaminant concentration in indoor air in response to several time-varying contaminant sources. For simplicity, it is assumed the predominant indoor material is a homogeneous slab, initially free of contaminant, and the air within the room is well mixed. The model enables transient volatile organic compound (VOC) concentrations to be predicted based on th… more
Date: February 1, 2001
Creator: Zhao, Dongye; Little, John C. & Hodgson, Alfred T.
Partner: UNT Libraries Government Documents Department
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Predicted concentrations in new relocatable classrooms of volatile organic compounds emitted from standard and alternate interior finish materials

Description: Relocatable classrooms (RCs) are widely employed by California school districts to satisfy rapidly expanding space requirements due to population growth and class size reduction policies. There is public concern regarding indoor environmental quality (IEQ) in schools, particularly in RCs, but very little data to support or dispel these concerns. Several studies are investigating various aspects of IEQ in California schools. This laboratory-based study focused on evaluating the emissions of toxi… more
Date: July 1, 2001
Creator: Hodgson, Alfred T.; Fisk, William J.; Shendell, Derek G. & Apte, Michael G.
Partner: UNT Libraries Government Documents Department
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Ferrous Sulfamate Stability in the RA System

Description: Objective: "The observations summarized in the present report were made to determine the stability of ferrous and sulfamate ions and sulfamic acid in RA Column scrub solution (RAS) and in aqueous solution comparable to the RA Column feed tee composition (RAFS). Knowledge of the stability of the reducing agent (ferrous iron) is necessary to properly plan the method of preparation and introduction of this component into the RA system and to assure dependable and reproducible performance."
Date: April 20, 1950
Creator: Clagett, Fred
Partner: UNT Libraries Government Documents Department
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Partition Coefficients of Organic Compounds in Four New Tetraalkylammonium Bis(trifluoromethylsulfonyl)imide Ionic Liquids Using Inverse Gas Chromatography

Description: This article discusses partition coefficients of organic compounds in four new tetraalkylammonium bis(trifluoromethylsulfonyl)imide ionic liquids using inverse gas chromatography.
Date: August 18, 2011
Creator: Acree, William E. (William Eugene); Baker, Gary A.; Mutelet, Fabrice & Moïse, Jean-Charles
Partner: UNT College of Arts and Sciences
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A Broad Spectrum Catalytic System for Removal of Toxic Organics from Water by Deep Oxidation - Final Report

Description: A most pressing need for the DOE environmental management program is the removal of toxic organic compounds present in groundwater and soil at specific DOE sites. While several remediation procedures have been proposed, they suffer from one or more drawbacks. The objective of the present research was to develop new catalytic procedures for the removal of toxic organic compounds from the environment through their deep oxidation to harmless products. In water, metallic palladium was found to cata… more
Date: December 1, 2000
Creator: Sen, Ayusman
Partner: UNT Libraries Government Documents Department
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Phase Stability of Homogeneous Reactor Hot Fuel Solutions

Description: S>Portions of two samples of HRT fael solutions were sealed in silica capillary tubes approximately three weeks after they were removed from the reactor and the temperature at which each solution separated into two liquid layers was determined. The values found, 325 er inch per 1 C for one sample and 326 er inch per 1/2 C for the other, are slightly lower than predicted from experiments with synthetic fuel solutions (329--330 C) but the discrepancies are small enough so that they could be accou… more
Date: August 18, 1959
Creator: Barton, C. J.; Gill, J. S.; Habert, G. M.; Marshall, W. L. & Moore, R. E.
Partner: UNT Libraries Government Documents Department
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Silenes and Silenoids in the Chemistry of Cyclopentadienylsilanes

Description: Evidence is presented that apparent silene products obtained from the metalation of cyclopentadienyldimethyl - chlorosilane either with tert-butyl1ithium or with methylenetriphenylphosphorane actually arise from the metalated starting material, a silenoid, rather than from a silafulvene intermediate. Trimethylmethoxysi1ane is shown to be an effective trap for dimethylsilafulvene. A new dimethylsilafulvene precursor, bis(dimethylmethoxysi1yl) cyclopentadiene, which gives high yields of dimethyld… more
Date: August 1986
Creator: Rozell, James M. (James Morris)
Partner: UNT Libraries
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Supporting Material for: Enthalpy of Solvation Correlations for Gaseous Solutes Dissolved in Water and in 1-Octanol Based on the Abraham Model

Description: This document includes supporting material for an article titled, "Enthalpy of solvation correlations for gaseous solutes dissolved in water and in 1-octanol based on the Abraham model," published in the Journal of Chemical Information and Modeling.
Date: December 15, 2007
Creator: Mintz, Christina; Clark, Michael; Acree, William E. (William Eugene) & Abraham, M. H. (Michael H.)
Partner: UNT College of Arts and Sciences
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