Y. Terui, K. Tori
1975
Citations
0
Influential Citations
17
Citations
Journal
Journal of The Chemical Society-perkin Transactions 1
Abstract
Conformations of piperidinium and NN-dimethylpiperidinium ions having a hydroxy- or acetoxy-group at C-4 or C-3, and of the corresponding free amines in solution have been studied by 1H n.m.r. spectroscopy. The population of the form with an axial hydroxy- or acetoxy-group of these ammonium ions is larger than that of the corresponding form in the free amines, without exception. The effect of 1,3-diaxial interaction energy and electrostatic interaction energy is discussed and an approximate value for the contribution of the latter in the conformation control of some ammonium ions is estimated.