Model compounds for simple saturated 7–9 membered rings: the X-ray crystal structure of hexa-, hepta-, and octa-methyleneammonium salts

Abstract

The structures of the title compounds have been determined by X-ray crystallography, and ring torsional angles are given for all three compounds; the conformation of the seven-membered ring is a slightly ‘twisted chair’ and that of the eight-membered ring a ‘boat chair,’ while the nine-membered ring does not possess any obvious symmetry.