2005 Volume 21 Pages x77-x78
The title compound, C6H12N5O2P3Cl2, a cyclotriphosphazene, has a spiro-ansa-spiro architecture in which the bicyclic system is in the sofa conformation. The asymmetric unit contains one half a molecule. Two P and two N atoms are capable of representing stereogenic centres (meso form). It belongs to the space group Pnma with cell parameters a = 11.6949(2), b = 13.6816(3), c = 8.576(2)Å.