Molten alkali-metal polychalcogenides as reagents and solvents for the synthesis of new chalcogenide materials

Flux Synthesis and Isostructural Relationship of Cubic Na1.5Pb0.75PSe4, Na0.5Pb1.75GeS4, and Li0.5Pb1.75GeS4

“…They are both special positions (24d) and will be referred to as cation site A and cation site B, corresponding to the numbering of the atoms which occupy these sites. Cation site A is disordered (50%/50%) between Na(1) and Pb (1). A symmetry-equivalent position is generated 3.807(2) A s away, see Fig.…”

Solid-state synthesis, structural variants and transformation of three-dimensional sulfides, AGaSnS4 (A=Na, K, Rb, Cs, Tl) and Na1.263Ga1.263Sn0.737S4

“…The new phases, generally metastable in nature, are the mixed-metal polysulfides and simple ternary and quaternary sulfides [2,3]. Simple sulfides have been reported [4][5][6] in large number in the quaternary A/M/M 0 /S system, where A is an alkali-metal and M and M 0 represent transition, post-transition and main group metals in the oxidation states I, II, IV and VI.…”

Synthesis and characterization of a family of two related quaternary selenides: Na8Eu2(Si2Se6)2 and Na9Sm(Ge2Se6)2

“…Many methods have been used to prepare chalcogenide structures, but reactive flux synthesis has proven to be one of the most successful methods [7]. Using this method, lowmelting alkali chalcogenide Zintl ions are used as both solvents and reactants under moderate reaction conditions.…”