CARBON-12/CARBON-13 AND HYDROGEN/DEUTERIUM VAPOR PRESSURE ISOTOPE EFFECTS OF FLUOROFORM: INTERMOLECULAR INTERACTIONS IN LIQUID FLUOROFORM.
Item
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Title
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CARBON-12/CARBON-13 AND HYDROGEN/DEUTERIUM VAPOR PRESSURE ISOTOPE EFFECTS OF FLUOROFORM: INTERMOLECULAR INTERACTIONS IN LIQUID FLUOROFORM.
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Identifier
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AAI8119673
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identifier
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8119673
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Creator
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POPOWICZ, ANTHONY MICHAEL.
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Contributor
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Takanobu Ishida
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Date
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1981
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Language
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English
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Publisher
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City University of New York.
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Subject
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Chemistry, Physical
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Abstract
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A precision cryostat of the Bigeleisen-Brooks-Ribnikar-Ishida (BBIR) type with associated vacuum systems has been constructed and the appropriate temperature/pressure measurement and control systems designed and implemented. Various improvements in the cryostat design were incorporated in order to facilitate the assembly and repair processes. A major design change involved the incorporation of a digital stand alone computer to control cryostat operations. This apparatus was used to measure the ('12)C/('13)C and H/D Vapor Pressure Isotope Effects of Fluoroform.;Analysis of the measured VPIE results, in light of existing experimental data and theories, has demonstrated the need of a temperature dependent liquid force field, specifically a temperature-dependent interaction force constant between the C-H stretching motion and translational motion in the direction of the figure axis of CHF(,3). This result is consistent with the observed spectroscopic data and vibrational and configurational models of fluoroform dimers. The intermolecular interaction is believed to be a weak hydrogen-bond in nature.
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Type
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dissertation
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Source
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PQT Legacy CUNY.xlsx
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degree
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Ph.D.
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Program
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Chemistry
