A New Solvothermal Synthetic Route Yields the New Thio­stannate [La(dien)₃]₂[Sn₂S₆]Cl₂

Abstract

Applying a new synthesis protocol with cystamine dihydrochloride as sulfur source we were able to synthesize the new compound [La(dien) 3 ] 2 [Sn 2 S 6 ]Cl 2 (1) (dien = diethylenetriamine) under solvothermal conditions. Under these conditions the S-S bond of the cystamine molecule is cleaved generating the S 2anions. The title compound is formed via an intermediate, (dienH) 2 Sn 3 S 7 , which reacts to

Syntheses, Crystal Structures, and Optical and Photocatalytic Properties of Four Small-Amine-Molecule-Directed M–Sn–Q (M = Zn, Ag; Q = S, Se) Compounds

“…Extensive research interest has been focused on chalcogenidometalates, stemming not only from their fascinating structures, but also from their potential applications in many areas such as ion exchange, − photocatalysis, fast-ion conduction, and nonlinear optics . The chalcogenidometalates containing group 14 metal ion Sn 4+ have received considerable attention owing to the flexible coordination behavior of Sn to chalcogen Q 2– (Q = S, Se, Te), and diverse self-condensation ways of [SnQ n ] polyhedra. − Recently, an effective strategy for the development of new chalcogenidometalates is to design and construct new heterometallic secondary building units (SBUs) by the combination of different polyhedra of Sn and a second metal ion (typically transition metal ions). − Such a synthesis strategy not only may result in numerous heterometallic chalcogenidometalates with structural and compositional diversities but also may engender interesting properties. − For instance, the compound [Zn­(H 2 O) 4 ]­[Zn 2 Sn 3 Se 9 ­(CH 3 NH 2 )] exhibited a strong second harmonic generation response, while the compound [(Me) 2 NH 2 ] 0.75 ­[Ag 1.25 SnSe 3 ] showed interesting cation-exchange properties with the specificity for Cs + ion.…”