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Synthesis and characterization of a layered chlorozincophosphate templated by protonated 4‐methylpiperidine

“…The existence of terminal Cl atoms and −OH groups leads to a porous sheets containing four-and eight-membered rings within [Zn(HPO 4 )Cl] − layers. Compared to other metalphosphates, these layers can be related to the structure type 488, which was previously seen in many zincophosphates [20,35,36], aluminophosphates (AlPO-12) [37] and gallophosphates (GaPO 4 -14) [38]. Upon heating, this new zincophosphate is stable until 530 K. It undergoes a reversible phase transition at 433 K, the loss of H 2 O molecule at 542 K while the loss of HCl and 4-methylpiperidine molecules occurs between 570 K and 775 K. Above 775 K, the resulting amorphous material is Zn 2 P 2 O 7 characterized elsewhere.…”

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

“…Since the discovery of first microporous zinc phosphates with zeolite-like topologies by Stucky and co-workers, a large number of zinc phosphates have been synthesized in the presence of organic, as well as inorganic templates. – ,,,,,,– …”

“…It is difficult to discuss all the 2D structure types (see Table ), and we will limit ourselves to a few typical ones. Among the structures with strictly alternating ZnO 4 and PO 4 tetrahedra, the commonly found one is that with a Zn/P ratio of 2/3 where a 12-membered bifurcated aperture is formed when the HPO 4 groups cross-link zigzag ladders (Figure b). ,,,, Then, there are also structures with 4.8 ,,, and 4.6.8 nets. Among the sheet structures with a tricoordinated oxygen, a stoichiometry of Zn 6 (HPO 4 ) 2 (PO 4 ) 4 with a Zn/P ratio of unity is the most common ,,,,, (Figure ).…”

Synthesis and crystal structure of a 3-D zinc phosphate, [C5N2H14][Zn2(PO3(OH))3], containing (4.8) net sheets

“…Natarajan et al [26][27][28] have recently used hydrochloric acid as a mineraliser in the preparation of a number of zinc phosphates with a range of dimensionalities but, as is observed here, no Cl was incorporated into the final ZnPO products. However, chlorinated ZnPOs [TH][Zn(HPO 4 )Cl] (T = cyclohexylamine [29], piperidine [30] and 1,6-diaminohexane [31]) and [TH] 2 [Zn(HPO 4 ) 2 Cl 2 ] (T = cyclohexylamine [32]), have also been prepared in the presence of HCl. All have layered structures assembled from ZnO 3 Cl and PO 4 tetrahedra.…”