OXYFLUORINATED COMPOUNDS WITH OPEN STRUCTURE .11. INTERACTION BETWEENTHE ULM-3 TYPE FRAMEWORK AND LINEAR DIAMINE TEMPLATES OF DIFFERENT CHAIN LENGTHS STUDIED BY X-RAY-DIFFRACTION AND SOLID-STATE NUCLEAR-MAGNETIC-RESONANCE CHARACTERIZATION

The synthesis and structural characterization of oxyfluorinated microp orous gallophosphates with the ULM-3 type are presented. This material is hydrothermally prepared (180 degrees C, autogenous pressure, 24 h) by using linear diamines [H2N-(CH2)(3-5)-NH2] as templates. The struc tures of the phases obtained with the variable organic chain lengths w ere examined by single-crystal X-ray diffraction (XRD) and P-31, F-19, C-13 solid-state nuclear magnetic resonance (NMR) spectroscopy. This study showed that the relative flexibility of the C-3-C-5 diamines all ows the preservation of the topology of the type ULM-3. In this series , the presence of fluorine, which is found in the bridging position be tween two gallium atoms, is strongly correlated to the existence of hy drogen bonds with ammonium groups of the organic molecules.