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Group IV organometal derivatives of pyridine. I—A 1H and 13C NMR investigation of trialkylmetal derivatives of pyridine

✍ Scribed by Terence N. Mitchell

Publisher
John Wiley and Sons
Year
1975
Tongue
English
Weight
477 KB
Volume
7
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

The proton and carbon‐13 NMR spectra of thirteen trialkylmetal derivatives of pyridine, several of which were previously unknown, have been recorded and analysed. The proton NMR spectra show variations in proton chemical shifts but not in proton‐proton coupling constants when the metal substituent is changed; the ring proton‐metal coupling constants ^n^J(MH) in the tin and lead derivatives correspond closely with the corresponding proton‐proton couplings ^n^J(HH) in pyridine. The carbon‐13 chemical shifts of the carbons bound to the metal can apparently be correlated with the electron‐donating ability of the trialkylmetal group. In the trimethylstannylpyridines the value of ^1^J(SnC~ring~) varies greatly with the position of the Me~3~Sn group.

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