Chemistry Commons^™

A Study Of The Adsorption Of Some Atmospheric Gases On Soils Of The Willamette Valley River Basin, Thomas R. Quale

Dissertations and Theses

Recent work indicates that microorganisms present in soils can remove carbon monoxide from the atmosphere and as such constitutes a major sink. B.E.T. adsorption studies were carried out on representative soils from the Willamette Valley River Basin in order to determine their adsorptive characteristics for carbon monoxide and other gases. Attempts were made to isolate, through a non-soildestructive sterilization, the adsorptive characteristics of the soil microorganisms as well as of the test soil.

The carbon monoxide studies show physical adsorption equivalent to the coverage of a few per cent of the surface area at 25.0° and 76 cm-Hg. Adsorption studies …

Ua66/7/2 Newsletter, Wku Chemistry

WKU Archives Records

Newsletter created by and about the WKU Chemistry department.

Kinetics Of The Metal Exchange Reaction Between N, N'-Bis (2-Picolyl) Ethylenediaminenickel (Ii) And Copper (Ii), Craig Lee Barsuhn

Masters Theses

No abstract provided.

The Kinetics Of The Metal Exchange Reaction Between Biseminodiacetatonickelate (Ii) And Copper (Ii), Stephen H. Erickson

Masters Theses

No abstract provided.

Rate Of Initiation Of Pyrolysis Of Pentachloroethane Using The Toluene Carrier Gas Technique, Teodomiro Cuzcano

Masters Theses

No abstract provided.

The Effect Of The Degree Of Cationic Charge On The Binding Strength Of A Cationic Starch-Kaolin Clay Coating, Hugh K. Myers

Masters Theses

No abstract provided.

The Synthesis And Reactions Of Some Α, Β-Unsaturated Diazoketones, Virendra K. Sood

Masters Theses

No abstract provided.

Rotationally Inelastic Molecular Scattering. Computational Tests Of Some Simple Solutions Of The Strong Coupling Problem, Thomas P. Tsien, Gregory A. Parker, Russell T. Pack

Faculty Publications

Partial cross sections (opacity functions) for rotational transitions in atom-diatom collisions are computed in the infinite-order sudden (IOS) approximation and compared with accurate close-coupling (CC) calculations. Agreement is good in the dominant coupling (small total angular momentum J) region. Simple methods for calculating integral inelastic cross sections are discussed, and it is found that accurate cross sections can often be computed very simply, even when large numbers of channels are coupled together, by using IOS or first-order sudden (FOS) approximations for small J and CC or exponential Born (EBDW) methods for large J.

An Indo Investigation Of The Structure And Bonding Of Acetylacetone And Trifluoroacetylacetone, Mark S. Gordon, Robert D. Koob

Mark S. Gordon

The energies of the enol forms of acetylacetone (ACAC) and trifluoroacetylacetone (TFA) have been minimized with respect to all structural parameters using the INDO molecular orbital theory. The internal hydrogen for enol ACAC is found to be symmetrically arranged between the two oxygens with an OHO angle of 152 o and an OH bond length of 1.174 A. Fluorine substitution to produce the electronically asymmetric molecule TFA causes only a slight asymmetry in the position of the internally bonded hydrogen. In both molecules this hydrogen is located in a well-defined single potential energy minimum. Electron density is increased on the …

Case Studies In Systems Chemistry, George Fleck

Open Educational Resources: Textbooks

This publication was produced as a teaching tool for college chemistry.The book is a text for a computer-based unit on the chemistry of acid-base titrations, and is designed for use with FORTRAN or BASIC.computer systems, and with a programmable electronic calculator, in a variety of educational settings. The text attempts to present computer programs that are relatively free of reliance on specialized large computer systems programs. The case-study approach presented is highly research and laboratory oriented. Similar subject matter is conventionally taught in most introductory college chemistry courses, but this text material attempts greater depth of instruction through utilization of …

The Role Of Mannosyl-Phosphoryl-Dihydropolyisoprenol In The Synthesis Of Mammalian Glycoproteins, John W. Baynes, An-Fei Hsu, Edward C. Heath

Faculty Publications

A mouse myeloma tumor was used as a model system to study the biochemical steps involved in the incorporation of mannose into glycoproteins. This tumor, MOPC-46B, synthesizes a K-type immunoglobulin light chain (K-46) which is a glycoprotein with a single oligosaccharide side chain containing mannose as one of its constituent sugars. MOPC-46B microsomal preparations contain enzymes which transfer mannose from the sugar nucleotide, GDPmannose, to endogenous lipid and protein acceptors. Formation of the mannolipid proceeds by the reversible transfer of mannose from GDP-mannose to an endogenous phospholipid. The mannolipid was purified and characterized by chemical methods and mass spectrometry as …

15th Annual Rocky Mountain Spectroscopy Conference

Rocky Mountain Conference on Magnetic Resonance

Program and abstracts from the 15th annual meeting of the Rocky Mountain Spectroscopy Conference, sponsored by the Rocky Mountain Section of the Society for Applied Spectroscopy. Held in Denver, Colorado, August 20-21, 1973.

The Internal Chemical Shift. A Key To Bonding In Aromatic Molecules. I. Internal Shift Correlations, Donald W. Beistel, Holger E. Chen, P. J. Fryatt

Chemistry Faculty Research & Creative Works

The study of proton shift behavior in nine families of disubstituted benzenes has provided quantitative correlations of internal and meta shifts among all families. The equations of correlation are useful in the prediction of shifts to an error of 0.015 ppm. The studies demonstrate shift additivity for the 4-substituted halobenzenes and suggest a chain rule relationship for substituent effects in those compounds. For that reason, previous theories of substituent interactions involving inductive and resonance contributors appear incorrect when applied to proton shift data. In decreasing order of up field shift at the ortho protons the substituents studied include N(CH3)2, NH2, …

Separation Of Copper (Ii) And Silver (I) By Differential Rates Of Extraction & Extraction Rate Studies Of Copper(Ii), Jon Hines

Masters Theses & Specialist Projects

It was the purpose of this work to study the extraction of Cu(II) and Ag(I) with dithizone in chloroform. This particular pair of elements was chosen for study for several reasons. The most prominent of these reasons is that these two elements are found together in nature and are often found combined in manufactured products. Being in the same periodic group, they exhibit similar chemical characteristics making them difficult to separate without special procedures. These similar chemical characteristics make the analysis of these elements difficult when in the presence of each other. Finally, it is of importance that both elements …

The Reactions Of Carbyl Sulfate With Weak Organic Bases, Cheryl Geiger

Masters Theses & Specialist Projects

The objective of this thesis is the study of the reactions of carbyl sulfate with two classes of weak bases: alcohols and nitriles. Of lesser maonitude the thesis will present a syncpsis of the probable mechanism of the reactions of carbyl sulfate.

Electron Transfer Rate Between Cobalt(Ii)-Cobalt(Iii) Polypyridyl Complexes In Nonaqueous Solvents, William Prow

Masters Theses & Specialist Projects

Numerous studies have been made in recent years on electron transfer reactions of transition metal complexes which proceed by either an inner- or an outer-sphere mechanism. However, except for the Fe(II)/ Fe(III) isotopic electron exchange system, few of the studies have been conducted in other than aqueous media. This study was undertaken to examine solvent effects on redox reactions of transition metal complexes which proceed by an outer-sphere mechanism.

During this study, the electron exchange rate between the bis(2,2',2"-tripyridyl)cobalt(II) complex and the tris(2,2'-dipyridyl) cobalt(III) complex was measured in a number of nonaqueous solvents. Rate measurements were made at three or …

The Intensity Of Ligand Absorption, Shing-Bong Chen

Masters Theses & Specialist Projects

The ultraviolet absorption spectra of a number of aryl phosphines and amines and transition metal complexes of triphenylphosphine have been determined. These data indicate that the intensity of the Õ* ¬ Õ phenyl ring transition is not only sensitive to the central atom attached to the ring but is also affected by the metal ion in the complex. Since the degree of covalency depends on the degree of back donation, the oxidation state of the metal ion was found to be the most important factor in determining the intensity of the absorption. The more covalent the metal-phosphine bond, the lower …

Thermodynamic And Electrochemical Studies Of Niobium In Molten Fluorides And Chloroaluminates, Gann Ting

Doctoral Dissertations

The oxide chemistry of niobium(V) has been studied in molten LiF-BeF₂ mixtures. The stoichiometry of an oxygen-containing niobium(V) species (NbO₂F) has been established in molten Li₂BeF₄ from the heterogeneous equilibrations of NiNb₂o₆ and NiO with the melt containing NiF₂, the equilibrium quotient for the reaction was determined. The equilibrium quotient for the heterogeneous reaction of Nb₂O₅ and BeO with molten LiF-BeF₂ mixtures (67-33 and 52-48 mole %) was also determined, and the effect of the melt composition on the solubility of Nb₂O_{5 …}

Simultaneous Knudsen- And Torsion-Effusion Measurements Of The Vapor Pressures Of Tetraphenyl Silane And Hexaphenyl Disilane, Luz Marina Calle

Masters Theses

No abstract provided.

State Of Bacterial Dna After Uptake Into The Roots Of Germinating Barley Seeds, Larry Dale Lawson

Theses and Dissertations

Germinating barley seeds have been shown to take up Bacillus subtilis DNA labelled with 5-bromouracil and tritiated thymidine and retain the DNA in the root system without substantially degrading it. The percentage of bacterial DNA recovered from the total root DNA was independent of the amount of bacterial DNA available for uptake. Four observations indicated the stability of bacterial DNA after uptake into barley roots: (1) the bacterial DNA retained its transforming ability after recovery from the roots; (2) the labelled B. subtilis DNA showed similar CsCl density gradient patterns before uptake and after uptake; (3) most of the radioactivity …

I. An Isothermal Titration Microcalorimeter. Ii. Importance Of Micronutrients In Nutrition. Iii. Zinc Bibliography, John Willard Gardner

Theses and Dissertations

I. An isothermal titration microcalorimeter having a colume of 4 ml and capable of temerature control to ±2 x 10-5°C is described. Major components include a constant temperature water bath controlled to ±3 x 10-4°C, a platinum reation vessel, and an isothermal control circuit consisting of constant Peltier thermoelectric cooling and variable Joule heating controlled by a thermistor in an AC Wheatstone bridge circuit. The calorimeter was tested by measuring the heat of ionization of water and was found to produce data accurate to ± 0.1% where small samples are used such as in the investigation of many biological systems.

Triplet-Triplet Energy Transfer In Indolylketones, Larry E. Hewitt

Dissertations

No abstract provided.

Synthesis And Selected Reactions Of [Pi]-(Arene) Chromium Tricarbonyls, Anthony L. Scaggs

Master's Theses

This project was concerned wit hthe preparation of two pi-(arene)-chromium tricarbonyl compounds that could serve as a synthetic intermediates to more complex systems. These intermediates would be particularly well-suited for the preparation of mono-complexed diaryl compounds. The two intermediates selected were pi-(acetophenone) chromium tricarbonyl and pi-(benzyl bromide) chromium tricarbonyl. After the intermediates had been synthesized, their utility in several selected reactions was to be examined.

Complexes Of The 2,2'-Bisacylhydrazide Of 3,3'-Bipyridine And The Dipicolinic Acid Dihydrazide Ligand Systems, William Leo Johnson Iii

Chemistry & Biochemistry Theses & Dissertations

The copper(II) complexes of the picolinic acid bydrazide (PH), the dipicolinic acid dibydrazide (DPH), and the 2,2'-bisacylbydrazide of 3,3'-bipyridine (DAR) ligand systems have been prepared and have been characterized by infrared spectroscopy. Coordination has been proposed to occur between the terminal amine, the amide nitrogen, and the ring nitrogen in each of the respective complexes.

Evidence for the loss of the amide hydrogen upon complexation of PH, DPH, and DAH with copper(II) has been observed by the n.m.r. study of the zinc(II) complexes of the PH and DAH ligand systems. This is in support of the structures proposed above for …

Aromatic Solvent Induced Shifts Of Trifluoromethyl Pyrazoles, Manuel Constantine Bourlas

Master's Theses

Nuclear Magnetic Resonance (NMR) has been used to study the keto-enol equilibrium in a number of trifluoro­methyl S-diketones as well as the dihydropyrazoles obtained when these S- diketones are reacted with thiosemicarbazide. The technique of Aromatic Solvent-Induced Shifts (ASIS) has been used to study the geometry of the collision complex and the strength of the association between solute and solvent. From the data presented, the stereochemistry of these pyrazoles has been determined and a reaction mechanism for their formation has been proposed.

The Investigation Of The Use Of Fluorescein As A Spectral Probe Of Protein Environment, Michael Andrew Martin

Honors Theses

The study was iniated to investigate the properties of fluorescein as a reporter group or spectral probe of protein environment. Through spectral and flourescence studies it was determined that the flourescein binding sites were non-polar relative to bulk water. The spectral study also showed a lowering of pKA for the first one or two flourescein molecules to bind to the protein.

Formation Of An Isoquinoline In The Reaction Of A Diazoketone With Boron Trifluoride, Marc Maller

Honors Theses

It has been reported through work in the field of diazo chemistry that normal reactions of diazo ketones with certain acids can result in some unusual products. In the normal type reaction substituted methyl ketones are the resulting products which occur as a result of the elimination of nitrogen. However, the presence of a nucleophilic center at the ortho position of an aromatic diazo ketone can override the normal replacement and result in a cyclization product with the elimination of nitrogen. In these reactions it was found that addition of excess neoleophile still did not form open-chain products. Both four-and …

Liquid Crystals: Low Melting Nematic 4, 4'-Bis-(Alkylbenzal)-2-Chloro-1,4-Phenylenediamines, Herbert S. Cole Jr.

Honors Theses

Several homologues of the 4,4'-bis-(alkoxybenzal)-2-chloro-1,4-phenylene series were synthesized and their mesomorphic behavior characterized. Furthermore a new series of liquid crystalline compounds, 4,4 1 -bis­ (alkylbenzal)-chloro-l,4-phenylenediamines, have been synthesized and the mesomorphic behavior characterized up to the c carbon chain length. All homologues showed nematic behavior with broad mesophases and particularly low melting points.

The Growth And Toxicity Of The Florida Red Tide Organism, Gymnodinium Breve, Marion Tilton Doig Iii

USF Tampa Graduate Theses and Dissertations

Mass mortalities of marine organisms in the Gulf of Mexico have been associated with blooms of the unarmored dinoflagellate, Gymnodinium breve. This investigation concerns the factors affecting the growth of G. breve and the properties of a toxin produced by the organism.

A modification of the Flask Test of the Provisional Algal Assay Procedure of the Joint Industry/Government Task Force on Eutrophication was used to determine the response of G. breve to various natural waters and enrichments. The growth-promoting potential of natural waters obtained from areas where outbreaks of G. breve frequently occur was greater than that of waters …

A Study Of Indole-Ring Compounds In The Retina Of The Eye Of The Cow (With Special Emphasis Given To Melatonin And Serotonin), James Howard Kaye

Honors Theses

The literature justifies the hypothesis that there might be either serotonin or melatonin present in the retina of higher verta­brates. Serotonin has been demonstrated in nervous tissues from animals in all parts of the animal kingdom. As the retina is part of the central nervous system, it is a logical place to look for the presence of serotonin. Serotonin has also been found in the brain of ungulate fetuses. Serotonin has been measured in isolated bovine fetal brain some seventy-five to ninety days following gestation.