
Phosphorus, Sulfur and Silicon and the Related Elements p. 185 - 202 (2000)
Update date:2022-08-03
Topics:
Schiemenz, Guenter Paulus
Contrary to claims in the literature, the 31P NMR signal positions of ortho-dimethylaminomethyl-substituted triarylphosphines do not provide evidence for hypercoordination at phosphorus; the observed highfield shifts relative to triphenylphosphine are rather due to the ortho-effect. In (8-dimethylamino-naphth-1-yl)phosphines, the signal positions similar to that of triphenylphosphine are the result of the highfield ortho-effect and a lowfield peri-substituent effect of about the same magnitude whose nature remains to be explored.
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