[C6H21N4][Sb9S14O]: Solvothermal synthesis, crystal structure and characterization of the first non-centrosymmetric open Sb-S-O framework containing the new [SbS2O] building unit |
| |
Authors: | Ragnar Kiebach C Peter Sebastian Rainer Pöttgen |
| |
Institution: | a Institut für Anorganische Chemie der Christian-Albrechts-Universität zu Kiel, Olshausenstraße 40, D-24098 Kiel, Germany b Institut für Anorganische und Analytische Chemie and NRW Graduate School of Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstrasse 30, 48149 Münster, Germany c Institut für Physikalische Chemie, Westfälische Wilhelms Universität Münster, Corrensstrasse 30, 48149 Münster, Germany |
| |
Abstract: | C6H21N4]Sb9S14O] represents the first known oxo-thioantimonate with an organic ion acting as structure director. The compound crystallizes in the non-centrosymmetric space group Cmc21 with a=29.679(2), b=9.9798(6), , , Z=4. The structure contains the hitherto unknown SbS2O] unit as a structural motif. The SbS3] trigonal pyramids and SbS2O] units are joined to form a 10-membered ring with large pores having a diameter of 7.7 Å×8.3 Å. The organic template molecule acts like a tetra-dentate ligand around the O atom of the SbS2O] 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 2.03 eV demonstrates that the material is an optical semi-conductor. Upon heating, the compound decomposes in two steps yielding finally a mixture of Sb and Sb2S3. The 121Sb Mössbauer spectrum shows a relative large line width in accordance with the superposition of the five signals. |
| |
Keywords: | Oxo-thioantimonates Hydrothermal synthesis Mö ssbauer spectroscopy Crystal structure |
本文献已被 ScienceDirect 等数据库收录! |
|