SYNTHESIS AND CRYSTAL-STRUCTURE OF (OH2)(3)]CENTER-DOT(ME-2-16-CROWN-5)CENTER-DOT-H2O

The complex [Y(NO3)(3)(OH2)(3)].(Me-2-16-crown-5). H2O has been prepar ed and its crystal and molecular structure determined using single cry stal X-ray diffraction. The colorless crystals belong to the monoclini c space group P2(1)/n with Z = 4. Lattice parameters are a = 10.420(1) , b = 17.257(3), c = 14.646(2) Angstrom, beta = 96.79(1)degrees, V = 2 615.1(6) Angstrom(3). The yttrium(III) ion is nine-coordinate, bonded to three bidentate nitrate groups and three water molecules. The avera ge Y-O(nitrate) and Y-O(water) distances are 2.42(3) and 2.33(1) Angst rom, respectively. The average MO-H ... O hydrogen bonded separation i s 2.767 Angstrom.