OXYFLUORINATED MICROPOROUS COMPOUNDS .5. SYNTHESIS AND X-RAY STRUCTURAL DETERMINATION OF ULM-3, A NEW FLUORINATED GALLOPHOSPHATE GA3P3O12F2, H3N(CH2)3NH3, H2O

Ga3P3O12F2, H3N(CH2)3NH3, H2O was obtained by hydrothermal synthesis (453 K, 24 hr, autogeneous pressure) from a mixture of Ga2O3, P2O5, HF, 1,3-diaminopropane, and H2O in the ratio 1:1:2:1.3:80. It is orthorhombic (space group Pbca (No. 61) with a = 10.154(1) angstrom, b = 18.393(2) angstrom, c = 15.773(2) angstrom, V = 2945.8(9) angstrom3, Z = 8. The three-dimensional network is built up from corner-linked [Ga3(PO4)3F2] units composed of three PO4 tetrahedra, two GaO4F trigonal bipyramids, and one GaO4F2 octahedron. Fluorine atoms are shared between the octahedron and the bipyramid. The framework delimits 10-membered ring channels along [100] and 8-membered ones along [101] and [10-1]. The amine and the water molecule are inserted in the 10-membered ring channels. The hydrogen bonding scheme is discussed and shows that the water is principally linked to the amine within the tunnel and that the template might be the amine monohydrate. The thermal behavior of the title compound is studied by TGA and X-ray thermodiffractometry. (C) 1994 Academic Press, Inc.