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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Pages: 37

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

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Description

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)

Physical Description

Pages: 37

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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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  • Report No.: CONF-117-39
  • Grant Number: AT(30-1)-1447
  • DOI: 10.2172/4084414 | External Link
  • Office of Scientific & Technical Information Report Number: 4084414
  • Archival Resource Key: ark:/67531/metadc865015

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  • January 1, 1963

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  • Sept. 16, 2016, 12:32 a.m.

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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; United States. (digital.library.unt.edu/ark:/67531/metadc865015/: accessed April 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.