The KInTe2 structure revisited

New Type of Polymeric Indium Tellurides: Low-Temperature Synthesis and Structure Characterization of [M(en)3]In2Te6 (M = Fe, Zn) and α- and β-[Mo3(en)3(μ2-Te2)3(μ3-Te)(μ3-O)]In2Te6

“…All In have a tetrahedral coordination with Te. The In−Te distances are comparable with other indium telluride compounds, such as those observed in the 1-D compounds listed above. − Compounds containing group 13/chalcogen five-membered rings include InSe 4 in the isolated anions [In 2 (Se 4 ) 2 (Se 5 ) 2 ] 4- , [In 2 Se 2 (Se 4 ) 2 ] 3- , and [In 3 Se 3 (Se 4 ) 3 ] 3- 19a and Tl 2 Se 3 , TlSe 4 , and Tl 2 Se 2 rings in (Tl 4 Se 16 ) 4- 19b [(In 2 Te 6 ) 2- ] polymeric chain has not been reported previously, nor have any other indium tellurium compounds containing five-memberd rings.…”

“…A variety of structures have been found which range from molecular (0-D) to chainlike (1-D), layered (2-D), and three-dimensional (3-D) extended systems. Examples of one-dimensional indium−chalcogen chains include edge sharing tetrahedra [(In 2 Q 4 ) 2- ] (“Zweier” single chain) in AInQ 2 (Q = Te and A = Na,2a K, 2a,b Tl;2c Q = Se and A = Tl 2c ), in A‘In 2 Te 4 (A‘ = Ca, Ba,2a Sr 2a ), and in [(C 4 H 9 ) 4 N] 2 In 2 Te 4 . More complex 1-D structures were observed in Rb 4 In 2 Q 5 (Q = S,5a Se 5b ) containing [(In 2 Q 5 ) 4- ] formed by dimers of edge sharing tetrahedra (In 2 Q 6 ) 6- sharing one corner (“Vierer” single chain); in Na 5 In 2 Te 6 , containing [(In 4 Te 12 ) 10- ] Zweier single chains of corner sharing tetrahedra where two neighboring chains are joined further to form ribbons through ditelluro bridges; and in Na 7 In 3 Se 8 , containing [(In 3 Se 8 ) 7- ], formed by alternating dimers of edge sharing tetrahedra and single tetrahedra (“Sechser” single chain).…”

“…Many of these compounds have been prepared at high temperatures via direct or chemical vapor transport reactions of elements and/or binary chalcogenides. 2a,c, 3,5-7 Some have also been synthesized by flux growth technique 2b. The only low-temperature studies we have found so far (considering all indium chalcogenide compounds) are the crystal growth of the 1-D [(C 4 H 9 ) 4 N] 2 In 2 Te 4 by employing the electrochemical method at room temperature 4 and the synthesis of the Zintl compound [(C 2 H 5 ) 4 N] 5 In 3 Te 7 in liquid ammonia …”

Tl2AXTe4 (A = Cd, Hg, Mn; X = Ge, Sn): Crystal Structure, Electronic Structure, and Thermoelectric Properties

“…There are several known alkali-metal analogues of the parent structure TlInTe 2 . One example is KInTe 2 . Below we will compare the calculated electronic structure of these two compounds and see the effect of replacing K with Tl.…”

“…In what follows we present the syntheses, crystal structures, calculated electronic structures, and measured TE properties of these new compounds. We also compare the calculated electronic structure of TlInTe 2 (a compound with a crystal structure from which the Tl 2 AXTe 4 crystal structure can be derived) with that of its isostructural alkali-metal analogue KInTe 2 …”