SYNTHESIS AND MOLECULAR-STRUCTURE OF BANB2(OIPR)12(IPROH)2 - A PRECURSOR FOR BA-NB OXIDE CERAMICS

The reaction between BaI2 and KNb(OiPr)6 in refluxing toluene yields a fter crystallisation in the presence of isopropanol to a species which has been characterized by the usual techniques (elemental analysis, I R, H-1 and C-13 NMR) and X-ray diffraction as an heterometallic solvat e BaNb2(OiPr)12(iPrOH)2. This compound crystallizes in the space group P-1 (triclinic) with a = 10.763(2) angstrom, b = 14.595(5) angstrom, c = 19.144(10)angstrom, alpha = 97.99(4)degrees, B = 96.69(3)degrees, delta = 102.04(2)degrees, V = 2879(2) angstrom3, Z = 2 and R = 0.0419 ,Rw = 0.0513. Intramolecular hydrogen bonding accounts for the stabili ty of the solvate.