Structure cristalline du trimétaphosphate de potassium K₃P₃O₉

Na3B3O3F6: Synthesis, Crystal Structure, and Ionic Conductivity

“…Interestingly the anion features the same number of valence electrons as the well‐known cyclo‐triphosphate P 3 O 9 3– , cyclo‐trisilicate Si 3 O 9 6– , cylo‐trigermanate Ge 3 O 9 6– , hexachlorosiloxane Si 3 O 3 Cl 6 etc., but the complex anion is only isostructural to the planar ones among them. The alkali cyclo‐triphosphates M 3 P 3 O 9 ( M = K, Na, Na/K)exhibit chair conformation,17–19 while the siloxane ring is found to be either non‐planar (e.g. M 6 Si 3 O 9 ( M = K, Rb, Cs)20,21) or (almost) planar (α‐Sr 3 Si 3 O 9 , α‐Ca 3 Si 3 O 9 ,Si 3 O 3 Cl 6 , Bi 2 Si 3 O 9 , BaSi 4 O 9 ) 22–26.…”

Caesium calciumcyclo-triphosphate, CsCaP3O9

“…. It has been found in, for example, K 3 P 3 O 9 (Bagieu-Beucher et al, 1976), Na 3 P 3 O 9 (Ondik, 1965), CsCdP 3 O 9 (Averbuch-Pouchot & Durif, 1977), CdK 4 (P 3 O 9 ) 2 Á2H 2 O (Averbuch-Pouchot, 1978), BaKP 3 O 9 Á-H 2 O (Seethanen & Durif, 1978) and NH 4 CaP 3 O 9 (Masse et al, 1975). We report here the synthesis and structural characterization of the condensed phosphate CsCaP 3 O 9 , (I), which is isotypic with CsCdP 3 O 9 (Averbuch-Pouchot & Durif, 1977).…”

Phase relations and flux research for zinc oxide crystal growth in the ZnO–K2O–P2O5 system

“…[18] (a = 12.94(3)Å, b = 4.54(2)Å, c = 5.92(2)Å). Bagieu-Beucher et al [20] reported that K 3 P 3 O 9 belonged to the monoclinic system with space group P2 1 /n and lattice parameters of a = 11.074(8)Å, b = 11.965(9)Å, c = 7.350(6)Å andˇ= 102.18(3) • . Averbuch-Pouchot [21] obtained the K 6 P 6 O 18 crystals from mixing solutions of Li 6 P 6 O 18 and KF in stoichiometric ratio and determined its structure as the cubic system with space group Pa3 and lattice parameter of a = 15.753(6)Å.…”

“…Four compounds were reported in this system with the K 2 O:P 2 O 5 molar ratios of 1:1 (KPO 3 ), 5:3 (K 5 P 3 O 10 ), 2:1 (K 4 P 2 O 7 ) and 3:1 (K 3 PO 4 ) [17][18][19][20][21][22][23][24][25][26][27][28].…”