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1998 (1)
1997 (1)
1Author    Z. NaturforschRequires cookie*
 Title    S o lv a to  
 Abstract    th erm a le D a r ste llu n g u nd S tru k tu r v o n [M e 4N ] 2[A s 6S 10] und [M e 4N ] 2 [A s 4S 7 ], d e m er ste n T h io a r se n a t(III) m it A s S 4 tr ig o n a len B ip yram id en S o lv a to th e rm a l S y nthesis an d S tru c tu re o f th e T h io a rs e n a te s (III) [M e4N ]2[A s6S 10] a n d [M e4N ]2[A s4S7], th e F irst T h io a rs e n a te (III) w ith ¥/-A sS 4 T rigonal B ip y ram id s V io la V ater, W illiam S. S held rick * The tetramethylammonium thioarsenate(III) [Me4N]2[As6S 10] (1) has been prepared toge­ ther with the minor product [Me4N]2[As4S7] (2) by reaction of [Me4N]Cl with As2S3 and Na2S in acetonitrile at 115 °C. The polymeric anion of 1 consists of adjacent i[A s3S5'] chains linked together into a i[A s6S102"] double chain through planar As2S2 rings involving As atoms of every second constituent ring-shaped A s3S6 building unit. A relatively undistorted V'-AsS4 trigonal bipyramidal geometry is observed for the participating As atoms. Individual A s3S6 units are linked by bridging AsS3 pyramids into the zweier single chains i[A s4S72"] in 2. 
  Reference    Z. Naturforsch. 52b, 1119—1124 (1997); eingegangen am 17. Juni 1997 
  Published    1997 
  Keywords    Arsenic, Sulfur, Thioarsenates(III), Solvatothermal Synthesis, Structure-Direction 
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 TEI-XML for    default:Reihe_B/52/ZNB-1997-52b-1119.pdf 
 Identifier    ZNB-1997-52b-1119 
 Volume    52 
2Author    Viola Vater, WilliamS. SheldrickRequires cookie*
 Title    Solventothermal Synthesis and Structure of the Polymerie Thioarsenates(III) (Et4N)2As6S10 and (Et4N)2As8S13  
 Abstract    Reaction o f (Et4N)C l with AS2S3 and NaaS in acetonitrile at 110°C affords the polym eric thioarsenate(III) (E u N ^ A söS io in which the cyclic [ A s . ^ ] 3-and chainlike [AS3S7]5-trinu-clear molecular building units are linked together through comm on sulphur atoms into infinite double chains. In contrast, reaction o f the same starting materials at higher temperatures (1 80°C) in water leads to formation o f a markedly denser phase (E u N ^ A ss S o , w hose thioarsenate(III) [A sgSi32—] anions exhibit a higher condensation grade. These likew ise double chains are com posed o f cyclic [AS3S6]3-and dinuclear [A s2Ss]4~ units with shared ip-AsS_^ tetrahedra corners. A nalogous treatment o f (Et4N)Cl with A s2Se3 and Na2Se in acetonitrile (T =l 10°C) yields (Et4N)[S eA sS e7]. 
  Reference    Z. Naturforsch. 53b, 1259 (1998); received July 7 1998 
  Published    1998 
  Keywords    Arsenic, Sulphur, Thioarsenates(III), Solventothermal Synthesis, Chain Structures 
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 TEI-XML for    default:Reihe_B/53/ZNB-1998-53b-1259.pdf 
 Identifier    ZNB-1998-53b-1259 
 Volume    53