ChemInform Abstract: THE EXISTENCE AT A LOW TEMPERATURE ORTHORHOMBIC FORM OF THE ORTHO SALTS NA4AO4; ANALOGIES BETWEEN THE HYDROGENATED ORTHO SALTS NA3HAO4.5H2O AND THE ANHYDROUS ORTHO SALTS (A = SILICON, GERMANIUM)

Structural Phase Transitions of Li₂MgSiO₄ and Li₂MgGeO₄

“…4) The γ II phase rapidly cooled from above 1100 °C shows orthorhombic Pnma symmetry with the disordered arrangement of Mg and Li atoms 11,12) . The β II ' phase obtained by slow cooling to the room temperature shows orthorhombic Pmn2 1 symmetry with its lattice parameter b half of that for γ II phase.…”

Hydrothermal synthesis, structure refinement, and electrochemical characterization of Li2CoGeO4 as an oxygen evolution catalyst

“…To the best of our knowledge, the crystal structure of LCG has only been discussed in three publications. Monnaye et al reported the polymorph g II structure with space group Pnma (PDF 04-002-4634), 18 and Tarte et al assigned their structure to the b II polymorph, space group Pmn2/1 (PDF 04-001-8430), 19 whereas West et al proposed that the structure of LCG could be orthorhombic but did not assign any space group. 17 However, the XRD pattern obtained from hydro-LCG in this study, as shown in Fig.…”

“…[12][13][14][15] However, for LCG, there has been no dedicated study, except for a few very old reports. [16][17][18][19] Herein, we report for the rst time hydrothermal synthesis of Li 2 CoGeO 4 , as well as the characterization of its material properties and use as OER catalyst. Structural renement and DFT calculation were also conducted to clarify the ambiguity on its crystal structure from previous studies.…”

Mechanism of structural phase transitions in the Li4GeO4-ZnGeO4 system: Computer modeling and identification of invariant nanocluster structures in Li4GeO4, LISICON Li6Zn(GeO4)2, and Li4Zn2(GeO4)2 (γ phase)

“…structural analogues [2,3,12], at least five atomic models have been proposed for superionic LISICON with Pearson's indices from oP40 to oP52; this diver sity is because of an ambiguity of locating randomly disordered Li atoms. The structural models of LISI CON derived from studies of single crystals all having the least value of Pearson's index of oP40 but having different Wyckoff's sequences (d 2 c 5 a [4] and d 3 c 4 [5]) con siderably differ from the models advanced for ceramic LISICON samples (d 3 c 5 , d 4 c 4 b, and d 3 c 5 b) [6,7].…”

“…The opportunity of isomorphic substitu tions of other elements (M(II) = Mg, Ca, Fe, Co, Ni, Zn, Cd) for Li atoms in the Li 4 GeO 4 structure to form Li 2 M(II)GeO 4 (γ Li 3 PO 4 ) was discovered in 1974 [2,3].…”