Fahimeheh MOHMMAD PANAH - Department of Chemistry, Islamic Azad University,Shahr-e Rey Branch,Tehran, Iran
MOHMMAD PANAH AGHABOZORG - Department of Chemistry, Teacher Training University, Tehran, Iran
Elahe SADR-KHANLOU - Department of Chemistry, Teacher Training University, Tehran, Iran

The anionic nine coordinated cerium(III) complex with guanidinium as countercations, (GH)3 [Ce(pydc)3] · 3 H2O, is crystallized in a distorted tricapped trigonalprism. The main interactions responsible for making this crystal lattice areinteractions between organic cation and anionic complex and two kinds of hydrogenbondings