SYNTHESIS AND STRUCTURAL INVESTIGATION OF AMMONIUM)DIISOTHIOCYANATOTETRANITRATOCERINATE(III)

The X-ray structural investigation of [(n-C4H9)(4)N](3)[Ce(NCS)(2)(NO3 )4(]) (I) has been carried out by means of three-dimensional single-cr ystal diffractometry. The title compound I crystallizes in space group Cc (No. 9, Z=4). The lattice constants are a = 16.577(3), b = 18.136( 4), c = 24.006(5) Angstrom, beta = 91.31(3)degrees. A full-matrix leas t-squares refinement yielded a final reliability (R) factor of 0.052 b ased on 2859 unique reflections. The coordination about the cerium cen tral atom is ten and the geometric polyhedron is bicapped dodecahedral . The molecules in the crystal lattice are held together by van der Wa als forces. Selected bond distances and angles are presented and discu ssed as well as synthesis and peripheral studies. (C) 1998 Elsevier Sc ience S.A. All rights reserved.