X-ray diffraction and vibrational data for a series of triphosphates type MIINa3P3O10.12H2O (MII = Cu, Ni and Mg) and their anhydrous forms MIINa3P3O10

Abstract

Chemical preparation methods, X-ray diffraction and vibrational data are reported for six triphosphates type MIINa3P3O10.12H2O (MII = Cu, Ni and Mg) and their anhydrous forms MIINa3P3O10. These condensed phosphates are respectively, CuNa3P3O10.12H2O, MgNa3P3O10.12H2O, NiNa3P3O10.12H2O, CuNa3P3O10, NiNa3P3O10 and MgNa3P3O10. The hydrate triphosphates were prepared by the method of ion-exchange resin, where as their anhydrous forms were prepared by total thermal dehydration of MIINa3P3O10.12H2O (MII = Cu, Ni and Mg).CuNa3P3O10.12H2O, MgNa3P3O10.12H2O and NiNa3P3O10.12H2O are isotypic, and crystallize in the monoclinic system, space group is P21/n, Z = 4, the unit-cell parameters are: CuNa3P3O10.12H2O, a = 15.052(8) Å, b = 9.234(3) Å,c = 14.767(8) Å and β = 90.03(5)°. MgNa3P3O10.12H2O: a = 15.049(1) (1) Å, b = 9.245(4) Å, c = 14 0.722(3) (2) Å and β = 90.00(5)°.NiNa3P3O10.12H2O: a = 15.010(1) Å, b = 9.208(4) Å, c = 14.710(2) Å and β = 90.00(5)°.The anhydrous forms CuNa3P3O10, MgNa3P3O10 and NiNa3P3O10 crystallize in the monoclinic system, space group is P21/n, Z = 4, the unit-cell parameters are: CuNa3P3O10, a = 12.464(0) Å, b = 8.437(7) Å, c = 12.083(1) Å and β = 109.77(8) °; MgNa3P3O10: a = 11.931(4) (1) Å, b = 12.912(2) Å, c = 10.057(0) Å and β = 113.83(2)° and NiNa3P3O10: a = 12.686(8)Å, b = 9.271(2) (4) Å, c = 11.440(3) Å and β = 102,95(5)°.