Synthesis and structures of new hybrid fluorides templated by tetraprotonated pentaerythrityl tetramine

Crystal structure of hexaaquocobalt(II) piperazinium hexafluorogallate(III) chloride, [Co(H2O)6)][C4H12N2][GaF6]Cl

“…The [Co(H 2O)6)] 2+ octahedron is quite regular with Co-Od istances from 2.065(7) Å to 2.086(5) . Å (mean 2.075 Å)a nd the O-Co-Oa ngles between 89.1(2)°and 178.7(3)°.The [GaF 6 ] 3-octahedron is almost regular with Ga-Fdistances from 1.873(4) Å to 1.901(3) .Å (mean 1.890 Å)and the F-Ga-Fangles between 89.0(2)°and 179.4(1)°, which are consistent with those observed in other gallium fluorides [4,5]. The cations and anions are held together through both electrostatic interactions and the N-H···F, O-H···Fand O-H···Cl hydrogen bonds.…”

Ternary and tetrahedral symmetry in hybrid fluorides, fluoride carbonates and carbonates

“…Infinite chains of cis or trans connected AlF 6 octahedra are ordered in a body-centred tetragonal arrangement [14] which perfectly fits the tetrahedral symmetry of organic [H 4 tetra] 4+ cations (Fig. 6).…”

Crystalline oxyfluorinated open-framework compounds: Silicates, metal phosphates, metal fluorides and metal-organic frameworks (MOF)

“…This would be partly due to the exclusive octahedral surrounding commonly observed for aluminum with fluorine, which seems to limit the size of the network cavities because of the number of linking ligands: a greater number of connections occurs in the octahedral coordination AlF 6 than in the tetrahedral coordination AlO 4 (or SiO 4 , PO 4 ) encountered in zeolite-like materials. Indeed, most of the organically templated aluminum (or gallium) fluorides correspond to the isolated anions [AlF 6 ] 3À [97,98] [101] (Fig. 5).…”

“…5. Examples of chain-like aluminum fluorides (grey octahedra) intercalated by amine molecules with different connection modes: corner-sharing (a) [AlF5] 2À with the pentaerythrityl-tetramonium cations[98] and mixed corner and edge-sharing (b) [Al2F8] 2À with the 2,4,6-trimethylpyridinium cations[105] (c) [Al2F8] 2À with the pyridinium cations[106].…”