Tetrahedral-Framework Lithium Zinc Phosphate Phases: Location of Light-Atom Positions in LiZnPO4 · H2O by Powder Neutron Diffraction and Structure Determination of LiZnPO4 by ab initio Methods

Synthesis and Characterization of a New Zinc Phosphate, [NH3(CH2)4NH3]2+[Zn2P3O9(OH)3]2−, Containing Alternating Inorganic–Organic Layers

“…The environments of the two Zn sites are chemically identical, each Zn being coordinated tetrahedrally to four oxygen atoms with Zn-O contacts varying between 1.932 and 1.989 A s (ave. 1.960 A s for Zn(1) and 1.943 A s for Zn (2)) and O-Zn -O angles lying between 95.00°and 118.84°(ave. 109.32°for Zn(1) and 109.35°for Zn (2)). These values are in excellent agreement with those observed for other zinc phosphates where Zn atoms are found exclusively in tetrahedral environments (21)(22)(23)(31)(32).…”

Open-Framework Inorganic Materials

“…[118,119] ZnPO and BePO faujasites, [120] BePO and BeAsO RHO, [121] and the ZnPO, ZnAsO, BePO, and BeAsO ABW. [117,122] New topologies were also found, including the beryllophosphate Na 0.5 K 0.5 BePO 4 (BPH), [123] the chiral framework, NaZnPO 4´H2 O (CZP), [124] and the A 3 Zn 4 O(XO 4 ) 3´n H 2 O (A alkaline, X P, As) series [125] [132] the Zn/P ratio in these compounds is very often less than 1. A higher Zn content implies some Zn-O-Zn linkages, the bridging oxygen atom being in trigonal coordination with a link to a phosphorus atom.…”

A New Polymorph of Lithium Zinc Phosphate with the Cristobalite-Type Framework Topology

“…The phenakite form has a completely different framework topology from LiZnPO -CR1 reported here (17). An orthorhombic form ( -LiZnPO ) was also described as having the cristobalite topology (18,19). The -LiZnPO has the same space group and similar cell parameters to the title compound and was classified as belonging to ''tetrahedral structures'' in the original report (20).…”