Solvothermal Synthesis and Characterization of One‐dimensional Indium Polyselenides with Transition Metal Complexes

Abstract

Two different systems were used for syntheses of metal selenides, [Mn(en) 3 ][In 2 Se 5 ] (1) and [MnSe(en) 0.5 ] (2) by the reactions of In 2 Se 3 , MnCl 2 , and selenium powder at 170°C for 6 days. Compound 1 contains a one-dimensional [In 2 Se 5 ] 2chain propagating along the crystallographic c axis separated by [Mn(en) 3 ] 2+ complex cations. The anionic chain is constructed by vertex-linked InSe 4 tetrahedra linked

Solvothermal Synthesis of One‐dimensional Chalcogenides Containing Group 13 Elements

“…Compound 2 is also isostructural to our recently reported [C 6 H 16 N 2 ][In 2 Se 3 (Se 2 )],16 and similar [In 2 Se 3 (Se 2 )] 2– chains have been subsequently found in {[M(phen) 3 ] · In 2 Se 5 · H 2 O} n 24 and [Mn(en) 3 ][In 2 Se 5 ] 25. The selenium‐selenium distance in the (Se 2 ) 2– perselenide unit of 2 (2.3702(8) Å) is comparable to those in previously described [M 2 Se 3 (Se 2 )] 2– (M = In, Ga) chains 11,16,24,25…”

“…A [CdSnTe 4 ] 2– chain, formed by alternating edge‐ and corner‐linked tetrahedra, and in which cadmium and tin atoms are ordered, has also been described 30. The [M 2 Se 3 (Se 2 )] 2– chain found in 2 – 5 was reported for the first time very recently,16 and to the best of our knowledge, all known examples of this kind of chain contain a single metal 11,24,25. The materials described here therefore represent the first example of ternary mixed‐metal [M 2 Se 3 (Se 2 )] 2– chains.…”

“…This material contains [GaS 3 ] – chains, consisting exclusively of five‐membered [Ga 2 S 3 ] rings. By contrast, recent literature reports suggest that incorporation of (Q 2 ) 2– units, as well as larger (Q n ) 2– units, into materials produced under solvothermal conditions, occurs more readily in selenides 11,16,24,25. An even greater tendency for the formation of chalcogen‐rich phases, containing chalcogen–chalcogen bonds, is found for the heavier congener, tellurium.…”

Synthesis and Structural Characterization of Cs2Ga2Se5

“…The observed bond lengths and angles are in good agreement with values reported for similar compounds 2,4–6. The bond length within the diselenide ion d (Se–Se) = 2.3743(7) Å is in good agreement with comparable compounds 4,10–14…”

“…The title compound as well as the recently reported Cs 2 Ga 2 S 5 9 are the first examples of anionic chains 1 ∞ [ M 2 Q 3 ( Q 2 ) 2– ] ( M = Al, Ga, In; Q = S, Se, Te) among group 13 chalcogenometallates containing alkali metal cations. Analogous 1 ∞ [ M 2 Q 3 (Q 2 ) 2– ] chains have been reported in [C 6 H 16 N 2 ][In 2 Se 3 (Se 2 )],10 [ M (C 12 H 8 N 2 ) 3 ][In 2 Se 3 (Se 2 )]H 2 O ( M = Ni, Fe),11 [C 4 H 14 N 2 ][Ga 2 Se 3 (Se 2 )],12 [C 6 H 16 N 2 ][Ga 2 Se 3 (Se 2 )],13 and [Mn(C 2 H 8 N 2 ) 3 ][In 2 Se 3 (Se 2 )],14 using organic cations as structure directing agents.…”