Research Article: 2-Dimethylamino-1-(2-ethoxy-2-oxo­ethyl)-3-methyl-3,4,5,6-tetrahydro­pyrimidin-1-ium tetraphenylborate

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.

Partial Text

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 ▶).




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