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Z. Naturforsch. 2012, 67b, 1098 – 1106
doi:10.5560/ZNB.2012-0126
New Thiostannates Synthesized Under Solvothermal Conditions: Crystal Structures of (trenH)2Sn3S7 and {[Mn(tren)]2Sn2S6}
Nicole Pienack, Diana Schinkel, Angela Puls, Marie-Eve Ordolff, Henning Lühmann, Christian Näther, and Wolfgang Bensch
Institute of Inorganic Chemistry, Christian-Albrechts University of Kiel, Max-Eyth-Str. 2, 24118 Kiel, Germany
Reprint requests to Prof. W. Bensch. Phone: +49 431 880-2419. Fax: +49 431 880-1520. E-mail: wbensch@ac.uni-kiel.de
Received May 9, 2012 / published online October 8, 2012
Dedicated to Professor Heribert Offermanns on the occasion of his 75th birthday
The two new thiostannate compounds (trenH)2Sn3S7 (1) and {[Mn(tren)]2Sn2S6} (2) (tren = tris-2-aminoethylamine) were obtained under solvothermal conditions. Compound 1 crystallizes in the hexagonal space group P63/mmc with a = 13.2642(19), c = 19.078(3) Å, V = 2906.9(7) Å3. The layered [Sn3S7]2− anion is constructed by Sn3S4 semi-cubes sharing common edges. The layers are characterized by large hexagonal pores with dimensions of about 11 × 11 Å2. Compound 2 crystallizes in the triclinic space group P1̅ with lattice parameters a = 7.6485(7), b = 8.1062(7), c = 12.1805(11) Å, α = 97.367(11), β = 103.995(11), γ =  108.762(10), V = 676.17(10) Å3. The [Sn2S6]4− anion is composed of two edge-sharing SnS4 tetrahedra and joins two Mn2+-centered complexes by Mn–S bond formation. The Mn2+ cation is in a trigonal-bipyramidal environment of four N atoms of the tren ligand and one S atom of the thiostannate anion. Both compounds are semiconductors with a band gap of 2.96 eV for 1 and of 2.75 eV for 2.
Key words: Thiostannates, Solvothermal Syntheses, Crystal Structure
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