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[Letter from I. H. Kempner to Mrs, Henry Westheimer, January 28, 1963]
Letter from I. H. Kempner to Mrs. Westheimer expressing his thanks for her thoughtful well wishes on his birthday.
Date:
January 28, 1963
Creator:
Kempner, Isaac H. (Isaac Herbert), 1873-1967
Object Type:
Letter
System:
The Portal to Texas History
[Letter from Isaac H. Kempner to Mr. and Mrs. Goldberger, January 16, 1963]
Letter from Isaac H. Kempner to Mr. and Mrs. Goldberger thanking them for their greetings for his 90th birthday.
Date:
January 16, 1963
Creator:
Kempner, Isaac H. (Isaac Herbert), 1873-1967
Object Type:
Letter
System:
The Portal to Texas History
The Unstable Species and the Isotope Effect in the Pyrolysis of Diborane in a Shock Tube
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)
Date:
January 1, 1963
Creator:
Fehlher, T P & Koski, W S
Object Type:
Report
System:
The UNT Digital Library