A sodium gallophosphate with an original tunnel structure: NaGa2(OH)(PO4)2 |
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| Authors: | A Guesdon Y Monnin B Raveau |
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| Institution: | Laboratoire CRISMAT, UMR 6508 associée au CNRS, ISMRA, 6, Boulevard du Maréchal Juin, 14050 CAEN Cedex-France |
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| Abstract: | A new sodium gallophosphate, NaGa2(OH)(PO4)2, has been obtained by hydrothermal synthesis under autogeneous pressure at 473 K. It crystallizes in the P21/n space group with the cell parameters a=8.9675(8) Å, b=8.9732(5) Å, c=9.2855(7) Å, β=114.812(6)°, V=678.2 Å3 (Z=4). In its original three-dimensional framework, monophosphate groups share their apices with Ga4O16(OH)2] tetrameric units, which are built from two GaO5(OH) octahedra and two GaO4(OH) trigonal bipyramids. The sodium cations are located in tunnels running along a, whereas the tunnels running along b are empty. |
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| Keywords: | Gallium monophosphate Hydrothermal synthesis Single crystal X-ray diffraction Structure determination Tunnel structure Tetrameric units |
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