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[C{sub 6}H{sub 21}N{sub 4}][Sb{sub 9}S{sub 14}O]: Solvothermal synthesis, crystal structure and characterization of the first non-centrosymmetric open Sb-S-O framework containing the new [SbS{sub 2}O] building unit

Journal Article · · Journal of Solid State Chemistry
 [1];  [1];  [2];  [3];  [2];  [1]
  1. Institut fuer Anorganische Chemie der Christian-Albrechts-Universitaet zu Kiel, Olshausenstrasse 40, D-24098 Kiel (Germany)
  2. Institut fuer Anorganische und Analytische Chemie and NRW Graduate School of Chemistry, Westfaelische Wilhelms-Universitaet Muenster, Corrensstrasse 30, 48149 Muenster (Germany)
  3. Institut fuer Physikalische Chemie, Westfaelische Wilhelms Universitaet Muenster, Corrensstrasse 30, 48149 Muenster (Germany)
[C{sub 6}H{sub 21}N{sub 4}][Sb{sub 9}S{sub 14}O] represents the first known oxo-thioantimonate with an organic ion acting as structure director. The compound crystallizes in the non-centrosymmetric space group Cmc2{sub 1} with a=29.679(2), b=9.9798(6), c=11.7155(7)A, V=3470.1(4)A{sup 3}, Z=4. The structure contains the hitherto unknown [SbS{sub 2}O] unit as a structural motif. The [SbS{sub 3}] trigonal pyramids and [SbS{sub 2}O] units are joined to form a 10-membered ring with large pores having a diameter of 7.7Ax8.3A. The organic template molecule acts like a tetra-dentate ligand around the O atom of the [SbS{sub 2}O] group. Depending on the value chosen for the Sb-S bond lengths, the material contains a 1-, 2- or 3-dimensional anion. The optical band gap of 2.03eV demonstrates that the material is an optical semi-conductor. Upon heating, the compound decomposes in two steps yielding finally a mixture of Sb and Sb{sub 2}S{sub 3}. The {sup 121}Sb Mossbauer spectrum shows a relative large line width in accordance with the superposition of the five signals.
OSTI ID:
20902466
Journal Information:
Journal of Solid State Chemistry, Journal Name: Journal of Solid State Chemistry Journal Issue: 10 Vol. 179; ISSN 0022-4596; ISSN JSSCBI
Country of Publication:
United States
Language:
English