Date Published: July 01, 2012
Publisher: International Union of Crystallography
Author(s): Ioannis Tiritiris, Willi Kantlehner.
Isolated guanidinium ions and tetraphenylborate ions are present in the crystal structure of the title compound, C11H22N3O2+·C24H20B−. In the guanidinium ion, the dihedral angle between the N/C/N and C/C/C planes being 49.9 (1)°. The six-membered ring exhibits a half-chair conformation. The C—N bond lengths in the cation range between 1.3335 (16) and 1.3552 (16) Å, indicating charge delocalization on the CN3 plane. In the crystal, the cations are connected by C—H⋯O hydrogen bonds, generating a chain along the c axis.
For the synthesis and nematocidal activity of arylvinyltetrahydropyrimidines, see: Kraouti et al. (1993 ▶). For the synthesis and nematocidal activity of pyrantel analogs, see: Kraouti et al. (1995 ▶). For the synthesis of 1-methyl-2-dimethylamino-1,4,5,6-tetrahydropyrimidine and derived cyclic guanidinium salts, see: Tiritiris & Kantlehner (2012 ▶).