The Unstable Species and the Isotope Effect in the Pyrolysis of Diborane in a Shock Tube

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From American Chemical Society 145th National Meeting, New York, Sept. 1963. The pyrolysis of diborane was examined using a chemical shock tube as a reactor. Additional evidence for the existence of hexaborane-12 and heptaborane- 11 and -13 was obtained. The presence of a large net normal isotope effect in the formation of tetraborane and hexaborane and a net inverse isotope effect in the formation of pentaborane-9 are observed. A mechanism, consisting of a series of competitive reactions and eqailibria, in which tetraboraue is the precursor of pentaborane-11 and hexaborane but not of pentaborane-9 is shown to be compatible with the … continued below

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37 pages

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Fehlher, T P & Koski, W S January 1, 1963.

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From American Chemical Society 145th National Meeting, New York, Sept. 1963. The pyrolysis of diborane was examined using a chemical shock tube as a reactor. Additional evidence for the existence of hexaborane-12 and heptaborane- 11 and -13 was obtained. The presence of a large net normal isotope effect in the formation of tetraborane and hexaborane and a net inverse isotope effect in the formation of pentaborane-9 are observed. A mechanism, consisting of a series of competitive reactions and eqailibria, in which tetraboraue is the precursor of pentaborane-11 and hexaborane but not of pentaborane-9 is shown to be compatible with the observed isotope effect. Data obtained by examining the pyrolysis of various mixtures of boron hydrides are also consistent with the mechanism. (auth)

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37 pages

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  • Other Information: From American Chemical Society 145th National Meeting, New York, Sept. 1963. Orig. Receipt Date: 31-DEC-64

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  • January 1, 1963

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Thumbnail image of item number 1 in: 'The Unstable Species and the Isotope Effect in the Pyrolysis of Diborane in a Shock Tube'.
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Fehlher, T P & Koski, W S. The Unstable Species and the Isotope Effect in the Pyrolysis of Diborane in a Shock Tube, report, January 1, 1963; Baltimore, Maryland. (https://digital.library.unt.edu/ark:/67531/metadc865015/: accessed May 30, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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