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Heat of Combustion of the Product Formed by the Reaction of Acetylene, Ethylene, and Diborane

Description: "The net heat of combustion of the product formed by the reaction of diborane with a mixture of acetylene and ethylene was found to be 20,440 +/- 150 Btu per pound for the reaction of liquid fuel to gaseous carbon dioxide, gaseous water, and solid boric oxide. The measurements were made in a Parr oxygen-bomb calorimeter, and the combustion was believed to be 98 percent complete. The estimated net-heat of combustion for complete combustion would therefore be 20,850 +/- 150 Btu per pound" (p. 1).
Date: October 24, 1957
Creator: Tannenbaum, Stanley
Partner: UNT Libraries Government Documents Department
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Calculation of the Vibrational Frequencies of Ethylene

Description: In this report, approximations which have been shown to simplify the calculation of the normal modes of paraffin hydrocarbons are tested for olefinic hydrocarbons by application to C2H4, CH2CD, C2D4. The results indicate that the method should suffice for the low-frequency models below about 0.1 ev energy, and may be adequate for all vibrations as far as he needs of neutron scattering are concerned,
Date: May 15, 1962
Creator: Goin, R W
Partner: UNT Libraries Government Documents Department
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Relative Energies of Polar and Nonpolar Valence Bond Functions and Molecular Orbital Theory II

Description: In the preceding note, it is shown that one could introduce correction factors into a molecular orbital theory treatment of the ethylene molecule which bring the results into closer agreement with experiment. These correction factors decrease the separation in energy between nonpolar and polar structures and were therefore found to decrease greatly the amount of configurational interaction in ethylene. Moreover, since state T of ethylene is purely nonpolar while state V is completely polar, the… more
Date: unknown
Creator: Wolfsberg, Max
Partner: UNT Libraries Government Documents Department
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