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Absolute shielding scale for 29Si

✍ Scribed by Cynthia J. Jameson; A. Keith Jameson

Book ID
103028254
Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
555 KB
Volume
149
Category
Article
ISSN
0009-2614

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✦ Synopsis

Simultaneous T, measurements for ?Si and 'H or 19F in SiH4 and SiF, gas lead to spin-rotation constants for %i which provide shielding values oO(*%, SiH,) = 475.3 k 10 ppm and u0(29Si, SiF4) =482 f 10 ppm. The absolute shielding in Me.,Si liquid reference is 368.5 k 10 ppm, with which 29Si chemical shifts can be converted to absolute shielding. We find that the 'H absolute shielding scale, the "'F absolute shielding scale and the two completely independent determinations of the *%i shielding scale are all in agreement.

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