Hydrothermal synthesis and crystal structure of a novel layered fluorinated gallium phosphate intercalating 1,12-diaminododecane Ga4(PO4)4F4·N4C24H60 (MIL-35)

Ga4(PO4)4F4·N4C24H60 or MIL-35 is a new layered fluorinated gallium phosphate obtained by mild hydrothermal synthesis using 1,12-diaminododecane as structure-directing agent. It crystallizes in the triclinic space group P1, a=539.3(2) pm, b=981.3(7) pm, c=1928.5(7) pm, α=80.67(6)°, β=88.78(5)°, γ=89.86(7)°, V=1006.9(9)×106 pm3, Z=1 and the refinements from single-crystal X-ray diffraction analysis converge to R1(F)=0.0622 and wR2(F2)=0.1346 for 5044 reflections with I>2σ(I). The inorganic sheets, stacked along [0 0 1] consist of GaO4F2 octahedra connected with PO4 tetrahedra interleaved by 1,12-diaminododecane molecules. The angle formed by the inorganic layer and the diamine molecule is around 52°.