Abstract

A new fluorinated gallium phosphate has been synthesized under mild solvothermal condition using a mixed water–dimethylformamide solvent. It has been characterized by single-crystal X-ray diffraction. Ga₃(PO₄)₃F₃·N₂C₃H₁₂·NC₂H₇ (MIL-30), obtained at 180 °C (3 days), crystallizes in the orthorhombic space group P2₁2₁2₁ (no. 19), a = 8.8107(2), b = 10.2258(2), c = 20.9082(3) Å, V = 1883.75(6) Å³. The structure is built up from layers of corner linked hexameric Ga₃(PO₄)₃F₃ units separated by protonated 1,3-diaminopropane and dimethylamine (coming from the decomposition of the co-solvent dimethylformamide). The hexamer consists of GaO₄F₂ octahedra, GaO₄F trigonal bipyramids and PO₄ tetrahedra which share corners. Within the layer, the connection mode of the hexameric building unit is similar to that found in the three-dimensional open-framework ULM-3.