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Title: $Solvothermal Syntheses and Crystal Structures of Two Thioarsenate Metal Complexes [Co(dien)<sub>2</sub>]<sub>3</sub>[As<sub>3</sub>S<sub>6</sub>]<sub>2</sub> and [Mn(teta)]<sub>2</sub>As<sub>2</sub>S<sub>5</sub>
Abstract: Two thioarsenates [Co(dien) 2 ] 3 [As 3 S 6 ] 2 (1, dien = diethylenetriamine) and [Mn(teta)] 2 As 2 S 5 (2, teta = triethylenetetramine) have been solvothermally synthesized and structurally characterized. 1 consists of isolated cyclic [As 3 S 6 ] 3− anions in a chair-conformation and two different isomeric [Co(dien) 2 ] 2+ cations, while 2 consists of neutral [Mn(teta)] 2 As 2 S 5 moieties built up from saddlelike As 2 S 5 anions as a tetradentate ligand connecting two [Mn(teta)] 2+ groups via terminal S atoms. The optical absorption spectrum of 1 is described.