STRUCTURAL SYSTEMATICS OF RARE-EARTH COMPLEXES .4. STRUCTURAL CHARACTERIZATION OF LANTHANOID(III) PICRATE HYDRATES - THE QUASI-UNDECAHYDRATE OF SAMARIUM(III) PICRATE

The structural characterization of a new quasi-undecahydrate of samarium(III) picrate is described. [SM(PiC)2(OH2)6](pic).4 3/4H2O is Monoclinic, C2/c, a 39.96(1), b 7.951(2), c 24.233(9) angstrom, beta 110.92(2)-degrees, Z = 8, temperature c. 295 K; R was 0.047 for 5010 'observed' diffractometer reflections. Like the cations of Part I, the present has two picrate and six aqua ligands; although the general stereochemistry is similar, the picrate ligands are both clearly unidentate, unlike previous arrays wherein one behaves in a quasi-bidentate mode utilizing an ortho-nitro oxygen atom.