Thierry Loiseau

TL;DR: Crystals of the oxyfluorinated gallium phosphate MIL-12 (digallium phosphate pentafluoride propane-1,3-diaminium), (C3H12N2)[Ga2(PO4)F5], were synthesized hydrothermally at 453 K under autogenous pressure using propane’s role as the structure-directing agent.

Abstract: Compounds containing the one-dimensional macroanion [Ga(HPO4)2F]2- have been synthesized using ambient and moderate solvothermal conditions, and their interconversion and reactivity studied. The anionic chains exist in the hydrated gallium fluorophosphate (1) Ga(HPO4)2F·(NH3(CH2)3NH3)·2H2O, synthesized at room temperature from an aqueous reaction. Heating 1 in air at 70 °C gives the dehydrated form 2 or Ga(HPO4)2F·(NH3(CH2)3NH3). 2 can also be solvothermally prepared at 120 °C from a water/DMF mixture and has been characterized by single-crystal X-ray diffraction. It is orthorhombic (space group Pbcm (no. 57), a = 8.642(2) A, b = 19.346(13) A, c = 7.114(4) A, V = 1189.3(11) A3), and refined to R1(F) = 0.0384 and wR2(F2) = 0.0704 for reflections with I > 2σ(I). Both the structures contain anionic chains of corner-sharing GaO4F2 octahedra linked together via fluorine and PO4 tetrahedra, the topology of which is the same as in the aluminophosphate mineral tancoite. Both 1 and 2 when heated with water under h...

TL;DR: Several aryl polycarboxylic ligands have been used to react with the pentavalent ethoxide niobium(V) precursor Nb(OEt)5 as discussed by the authors .

TL;DR: A new layered gallium phosphate Ga10(PO4)2(HPO4)12(OH)5⋅2.5H2O was hydrothermally synthesized at 180°C for 3 days by using triethylenetetramine (teta) as structure-directing agent as discussed by the authors.