Synthesis of the titanium phosphide telluride Ti2PTe2: A thermochemical approach

Mineralization Routes to Polyphosphides: Cu2P20 and Cu5InP16

“…These elements and do not form binary phases with phosphorus and only a handful of ternary compounds of Hg or Te have been stabilized as phosphide halides, [29] BaP 4 Te 2 , [30] and Ti 2 PTe 2 . [31] Recently we reported on AgSbP 14 , the first purely inorganic compound with a covalent SbÀP interaction, and we have preliminary experimental evidence for a compound in which Pb is the only cationic species stabilizing a polyphosphide substructure. Currently we are looking to increase the number of mineralization agents and trying to generalize and transfer the principle to other polyanionic frameworks.…”

Chemistry and Physical Properties of the Phosphide Telluride Zr2PTe2

“…The third method of synthesis is a thermite-type reaction of elementary zirconium and the tellurium oxide phosphate Te 8 (3) This way, the kinetic restraints of the other methods of synthesis can be avoided. The use of Te 8 O 10 (PO 4 ) 4 , which remains solid at temperatures below 800°C, [8] is preferred over TeO 2 and P 4 O 10 , which would sublime at lower temperatures.…”

“…Two of them consist of isolated phosphide and telluride anions: the uranium phosphide telluride UPTe [6,7] and the recently found compound Ti 2 PTe 2 . [8] Four other phosphorus-and tellurium-containing compounds are known: the three telluro-phosphides IrPTe, [9] OsPTe [10] and RuPTe, [10] consisting of M 3+ cations besides [P-Te] 3-dumbbells, and the compound BaP 4 Te 2 [11] built from Ba 2+ cations and 1 ϱ [P 4 Te 2 ] 2-anions. Remarkably, no binary phosphorus and tellurium compounds are known, which additionally reflects the low affinity of the two elements as well as kinetic restraints.…”

Chemical Vapour Transport of Bismuth and Antimony Chalcogenides M2Q3 (M = Sb, Bi, Q = Se, Te)

“…The vapour transport appears possible, if the equilibrium constant is not extreme (10 −4 < K p < 10 In contrast, vapour transport using bromine or chlorine is unfavourable due to its extreme equilibrium constants K p,800 > 10 4 bar. These result from the higher stability of the involved chlorides and bromides (compare: ∆H Second, to obtain more detailed predictions on the experimental transport conditions as well as to reveal more complex interactions of different solid-gas equilibria, thermodynamic modelling of the ternary systems was performed by using the program TRAGMIN [25]. For the system Bi 2 Se 3 /I 2 the condensed phases Bi(s), BiI 3 (s), Bi 2 S e 3 (s), BiSeI(s), I 2 (s) and Se(s,l) and the gaseous species Bi(g), Bi 2 (g), BiSe(g), BiI(g), BiI 3 (g)¸ I(g), I 2 (g), Se x (g) (1 ≤ x ≤ 8) were taken into account.…”

“…Using these calculations prior to the experiment, meticulous prediction of experimental transport conditions becomes possible [24,25].…”