Synthesis, structure, and properties of some selenidostannates. II. [(C2H5)(3)NH](2)Sn3Se7 center dot 0,25 H2O and [(C3R7)(2)NH2](4)Sn4Se10 center dot 4 H2O

Autor(en): Fehlker, A
Blachnik, R
Stichwörter: Chemistry; Chemistry, Inorganic & Nuclear; crystal structure; CRYSTAL-STRUCTURE; LAMELLAR SELENIDOSTANNATES(IV); polyanions; selenidostannates; selenium; tin
Erscheinungsdatum: 2001
Herausgeber: WILEY-V C H VERLAG GMBH
Journal: ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
Volumen: 627
Ausgabe: 6
Startseite: 1128
Seitenende: 1134
Zusammenfassung: 
The new selenidostannate hydrates [(C2H5)(3)NH](2)Sn3Se7.0.25H(2)O (I) and [(C3H7)(2)NH2](4)Sn4Se10. 4H(2)O (II) were synthesized from an aqueous suspension of triethylammonium (tripropylammonium), tin, selenium I and in addition sulfur II at 130 degreesC. I crystallizes at ambient temperature in the monoclinic space group P2(1)/n (a = 2069.3(4) pm, b = 1396.6(3) pm, c = 2342.8(5) pm, beta = 114.68(3)degrees Z = 8) and is characterized by two different anions, chains from edge-sharing [Se3Se7](2-) units and nets from trigonal SnSe5 bipyramids. II crystallizes at ambient temperature in the tetragonal space group I4(1)/amd (a = 2150.0(3) pm, c = 1174.4(2) pm, Z = 4) and contains adamantane like [Sn4Se10](4-)-cages. The UV-VIS spectra of the selenidostannates demonstrate that the absorption edges red shift as the dimensionality of the compounds is increased.
ISSN: 00442313
DOI: 10.1002/1521-3749(200106)627:6<1128::AID-ZAAC1128>3.3.CO;2-0

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