Browsing by Subject "Chemistry"
Now showing items 1-20 of 235
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(Texas A&M University. Libraries, 1983)The effect of electron correlation on the electron distribution and bonding of diborane is examined in several basis sets. The generalized molecular orbital method is used to define optimized orbitals for the configuration ...
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(Texas A&M University. Libraries, 1983)Adsorptivities of azaarenes on Florisil were investigated; the study included the use of Florisil: (1) to analyze azaarenes in ambient air; (2) to evaluate substituent effects of various azaarenes on retention factors; and ...
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(Texas A&M University. Libraries, 1983)Lithium aluminium hydride (LAH) in tetrahydrofuran (THF) reacted rapidly with isoquinoline to give lithium tetrakis dihydroisoquinoline aluminate (LTDA). Proton and ('13)C NMR spectra indicated the presence of only 1,2- ...
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(Texas A&M University. Libraries, 1976)The catalytic activity of Cu(II)NaY zeolites in the oxidation of ammonia by molecular oxygen and by nitric oxide has been investigated for a series of copper-exchanged Y zeolites. Kinetic data were determined for the ...
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(Texas A&M University. Libraries, 1966)
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(Texas A&M University. Libraries, 1981)Seven fractions of a 535-675(DEGREES)C distillate of Wilmington, California crude oil were subjected to qualitative and semi-quantitative analysis using probe microdistillation/mass spectrometry. Samples of the saturates, ...
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(Texas A&M University. Libraries, 1963)
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(Texas A&M University. Libraries, )An investigation of novel and general approaches to the syntheses of hydroisoquinolines and hydrophenanthridines is described. These approaches employ amino-Claisen and related rearrangements of N-vinylisoquinuclidenones, ...
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(2009-05-15)Triazine chemistry has many applications from industrial usage, such as melamine resins, to academic interests in dendritic structures which may one day come to fruition as pharmaceutically applicable molecules. Organic ...
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(Texas A&M University. Libraries, 1978)The purpose of this study was to develop a novel synthetic method to synthesize trichodiene (1). This study has utilized 2-methyl- Δ¹- cyclopentenecarboxylic acid (23) as the starting material for the preparation of dienone ...
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(Texas A&M University. Libraries, 1978)The use of 1,8-dihydroazocines, prepared from cycloaddition reactions of activated acetylenes with 1,2-dihydropyridines, as synthons for the preparations of mitomycin was explored. Our specific aim was to test the ability ...
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(Texas A&M University. Libraries, 1982)The asymmetric syntheses of N-protected-(alpha)-amino acid derivatives are reported. Deprotonation of N-benzoylglycine (-)-menthol ester (1) with lithium diisopropylamide (LDA) affords the stable dilithio derivative (9). ...
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(Texas A&M University. Libraries, 1976)The gas phase reaction of 1,1-difluoroethylene with bromine was studied over the temperature range 550 to 620°K. The experimental data, derived from the early stages of reaction, were found to be consistent with the following ...
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(Texas A&M University. Libraries, 1972)The semi-empirical SCF method for all-valence-electron in the INDO approximation has been modified by reparameterization for calculation of the electronic structure of nitrogen-containing heterocyclic compounds. In the ...
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(Texas A&M University. Libraries, 1978)The kinetics and equilibrium measurements of a-amino acids have been investigated, under β-elimination conditions, in the presence of pyridoxal with and without catalytic metal ions. The nmr technique was applied to several ...
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(Texas A&M University. Libraries, 1983)Identities, as well as purities, of synthesized alkali metal-graphite intercalation compounds were confirmed by X-ray diffraction methods. Second-stage compounds (MC(,24), M = K, Rb, or Cs) adsorb large amounts of nitrogen ...
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(Texas A&M University. Libraries, 1982)Alkali metal-graphite intercalates, NaC(,64), KC(,24) and KC(,8) and an iron-containing potassium-graphite (4.5 wt. % Fe) possess large adsorption capacities for carbon monoxide and exhibit high initial activities for CO ...
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(Texas A&M University. Libraries, 1975)This dissertation describes the kinetics, specificity, mechanisms, and affinity labeling of the L-tyrosine/L-phenylalanine transport system in whole cells of Bacillus subtilis. The L-tyrosine/L-phenylalanine transport ...
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(Texas A&M University. Libraries, 1982)The characterization of several molybdenum zeolites was facilitated using X-ray photoelectron spectroscopy. Samples prepared from the reaction of Mo(CO)(,6) with ultrastable zeolites exhibited superficially high concentrations ...
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(Texas A&M University. Libraries, 1981)The decomposition of the {Ru(NH(,3))(,6)}('3+) complex in both X- and Y-type zeolites was investigated using several techniques including EPR spectroscopy, infrared spectroscopy, and Electron Spectroscopy for Chemical ...