X-ray and mössbauer evidence for a high temperature form of Na2SnF6

Li2PbF6 and SrPbF6 Revisited

“…[13][14][15][16][17][18][19][20][21][22][23][24] The compounds M I 2 SnF 6 (M I = Li-Cs) are structurally characterized as well. [13,[25][26][27] For the stannates(IV), the crystal structures of the compounds M II SnF 6 (M II = Mg, Ca, determined the decomposition temperature of Li 2 PbF 6 . We also present the corrected space group and crystal structure for SrPbF 6 Sr, Ba, Mn, Fe, Co, Ni, Pd, Cu, Ag, Zn, Cd, Hg) were reported.…”

“…The crystal structures of the alkali metal hexafluoridosilicates(IV) and hexafluoridogermanates(IV) are also known for Li–Cs . The compounds M I 2 SnF 6 ( M I = Li–Cs) are structurally characterized as well , . For the stannates(IV), the crystal structures of the compounds M II SnF 6 ( M II = Mg, Ca, Sr, Ba, Mn, Fe, Co, Ni, Pd, Cu, Ag, Zn, Cd, Hg) were reported .…”

Revisiting Sodium Hexafluoroiridates: Perspective Precursors for Electronic, Quantum, and Related Materials

“…P321, a = 9.332(4), c = 5.136(2) Å coinciding within uncertainty with the published data. 18 It should be noted that the compound β-Na 2 [IrF 6 ] is metastable and, similar to Na 2 [SnF 6 ], 32 it is converted to the tetragonal phase stable at room temperature with the progress of time. The diffraction pattern of a sample of β-Na The interaction of 1.009 g of β-Na 2 [IrF 6 ] (I) with 10 ml of H + -form of the cation exchanger KU-2 in 10 ml of water under stirring for 30 min (100 rpm) afforded a solution of H 2 [IrF 6 ] (III).…”

“…It should be noted that the compound β-Na 2 [IrF 6 ] is metastable and, similar to Na 2 [SnF 6 ], it is converted to the tetragonal phase stable at room temperature with the progress of time. The diffraction pattern of a sample of β-Na 2 [IrF 6 ] stored in a closed vial for two years exhibited reflections of the tetragonal phase α-Na 2 [IrF 6 ] .…”