Hydrothermal Synthesis and Characterization of the New Layered Fluorogallophosphate Mu-23

A New Organic‐Inorganic Hybrid Gallophosphate Prepared in the Presence of Glycine

“…The 31 P MAS NMR spectrum of Mu‐32 displays only one signal located at δ = −9.2 ppm (Figure 7) in agreement with the structural data in which only one crystallographic phosphorus site is present. Such a chemical shift value is similar to those traditionally observed for PO 4 groups in gallophosphates 9,10…”

“…In several cases, the introduction of fluoride ions is crucial for the formation of the phosphate‐based material 19. F − can act as a mineraliser, it can become trapped in the cages of the framework playing a templating role as shown in the fluorogallophosphate cloverite20 or it may form a bridge between the atoms of the framework 21. The amine molecules occupy the cavities or the channels of the framework and are usually removed by calcination of the synthesised sample.…”

Metal Complexes of Organophosphate Esters and Open-Framework Metal Phosphates: Synthesis, Structure, Transformations, and Applications

“…The ubiquitous presence of various SBUs in the fluoride-containing solids led them to propose a mechanism for their formation. Today, gallium phosphates constitute a large family of templated networks with a range of zero-, one-, two- and three-dimensional structures. ,,,,,,,,,– The formulae and unit cell parameters of the members of these families are listed in Table . Like in the AlPO family, the ratio of Ga and P varies from unity, but unlike AlPO, the Ga/P ratio is sometimes greater than unity.…”

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

“…A structural correlation of the SBU type could be made as a function of the pK a values of the different diamines [46]. Fluorine may be also involved in a terminal bond with shorter Ga-F distances as found in GaPO 4 -CJ2 [73] (1.903 Å ), TMP-GaPO [74] (1.79 Å ), Mu-3 [58] (1.824-1.862 Å ), Mu-15 [60] (1.86 Å ) Mu-23 [75] (1.854-1.885 Å ) and Mu-28 [76] (1.80-1.86 Å ). Due to its higher electronegativity, it preferentially interacts via strong hydrogen bonds with the ammonium groups of the amine molecules.…”