ChemInform Abstract: New Cerium Nitride Chlorides: Ce6Cl12N2 and CeNCl.

Abstract The compound CeNCl is shown to be isotypic with tetragonal BiOCl with lattice parameters a=b=4.079(2) A , c=6.837(2) A . The compound Ce 6 Cl 12 N 2 was prepared from CeCl 3 , Ce and NaN 3 in a sealed Nb tube at 750 °C. The structure of Ce 6 Cl 12 N 2 was solved by X-ray single crystal diffraction and shown to contain edge-shared, nitrogen-centered, cerium tetrahedra. The lattice parameters for Ce 6 Cl 12 N 2 were determined to be a=11.233(4) A , b=16.527(8) A , c=10.708(3) A , β=90.15° in the spacegroup P2 1 c .