SYNTHESIS AND CHARACTERIZATION OF POLYETHER ADDUCTS OF BARIUM AND STRONTIUM CARBOXYLATES AND THEIR USE IN THE FORMATION OF MTIO3 FILMS

The synthesis, characterization, and reactivity of new polyether adducts of strontium and barium carboxylates of general composition M(O2CCF3)n(L) (M = Ba, L = 15-crown-5, (1); M = Ba (2), Sr (3), respectively, with L = tetraglyme are reported. The compounds were synthesized by reaction of BaCO3 or MH2 (M = Sr or Ba) with organic acids in the presence of the polyether ligands. These compounds have been characterized by IR and 13C and 1H NMR spectroscopies, elemental analyses, and thermogravimetric analysis. The species Ba2(O2CCF3)4(15-crown-5)2 (1) and [Ba2(O2CCF3)4(tetraglyme)]∞ (2), were also characterized by single-crystal X-ray diffraction. Ba2(O2CCF3)4(15-crown-5)2 (1) crystallizes in the orthorhombic space group Cccm with cell dimensions of a = 13.949(1) A, b = 19.376(2) A, c = 16.029(1) A, and Z = 8. [Ba2(O2CCF3)4(tetraglyme)]∞ (2) crystallizes in the monoclinic space group C2/c with cell dimensions of a = 12.8673(12) A, b = 16.6981(13) A, c = 15.1191(12) A, β = 99.049(8)°, and Z = 4. Compounds 1−3...