The structure consists of singly charged 3-amino-1-propylammonium cati
ons and tetrahedral perchlorate counterions. Both of the terminal N at
oms form three N-H bonds, each of which is involved in a strong hydrog
en bond [N...O 2.739 (5)-2.845 (5) angstrom]. This requires the lone p
roton to partially occupy sites on both N atoms, thereby giving each s
ome ammonium character.