239. N-substituted heterocyclic cations. Part V. The use of proton magnetic resonance spectroscopy in the solution of some classical structural problems
作者:R. Bramley、M. D. Johnson
DOI:10.1039/jr9650001372
日期:——
Mumm; Herrendoerfer, Chemische Berichte, 1914, vol. 47, p. 758,762