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Model Calculations of the 13 C NMR Shieldings in the Crystalline Cyclic Pentamer of Poly( p -phenylene sulfide)

✍ Scribed by Tonelli, A. E.; Chesnut, D. B.

Book ID: 126811084
Publisher: American Chemical Society
Year: 1996
Tongue: English
Weight: 283 KB
Volume: 29
Category: Article
ISSN: 0024-9297
DOI: 10.1021/ma951466i

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## Abstract In the acetylenic aldehyde oximes with substituents containing silicon and germanium, the ^13^C NMR signal of the C‐2 carbon of triple bond is shifted by 3.5 ppm to lower frequency and that of the C‐3 carbon is moved by 7 ppm to higher frequency on going from E to Z isomer. A greater lo