Flux synthesis of two new open-framework zinc phosphites with 16-ring channels

The Different Effects of Organic Amines on Synthetic Metal Phosphites/Phosphates

“…What is interesting is that there is a hydroxyl group to coordinate the Ga of octahedron. The Ga-O bond distance is located in the region 1.941(4)-1.998(4) Å and O-Ga-O bond angle varies from 86.92 (19) • to 179.62 (19) • . For the HPO 3 pseudo pyramids, the P-H bond lengths are 1.3333 Å and 1.3721 Å, and the P-O bond distance is situated in the ranges from 1.497(5)-1.524(5) Å.…”

Using Multifunctional Ionic Liquids in the Synthesis of Crystalline Metal Phosphites and Hybrid Framework Solids

“…The development of simple synthetic systems is therefore highly desirable. In the earlier studies, a three-component approach has been explored to synthesize open-framework metal phosphites in phosphorous acid flux . It is worth noting that the utilization of multifunctional ionic liquids as reactant–template–solvent systems could further simplify the reaction systems.…”

(C2H8N)2[Be3(HPO3)4]: a low-density beryllium phosphite with large 16-membered rings and helical channels

“…4 For example, the 16-membered-ring (16 MR) zinc phosphite (H 2 aep) 2 $Zn 6 (HPO 3 ) 8 has a density of 2.105 g cm À3 , which is obviously lower than that of zinc phosphate H 3 aep$Zn 3 -(PO 4 )(HPO 4 ) 3 (16 MR) with a value of 2.412 g cm À3 . 5 The third method to obtain low-density frameworks is the use of lightweight main group ions (such as Li, Be and B) as the framework building elements. 6 It has been demonstrated that the substitution of Zn atoms in microporous MOF-5 by the lightweight Be atoms will result in 40% increase in its surface area and gravimetric hydrogen storage capacity.…”

“…The Be(1) atom locates in a general position and the Be(2) atom locates on the twofold axis. Both of them are tetrahedrally coordinated by their oxygen neighbours with Be-O bond lengths in the region 1.596(4)-1.654(5) A and O-Be-O angles in the range of 101.43(11)-114.9(4) . The two independent phosphorus atoms each make three P-O-Be connections to adjacent beryllium atoms, with the fourth vertex occupied by a terminal hydrogen atom.…”