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Synthesis, crystal structure and characterization of alkali metal hydroxoantimonates |
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| Authors: | Alexey A Mikhaylov Andrei V Churakov Judith AK Howard Subramanian Bharathi Petr V Prikhodchenko |
| Institution: | a Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Leninskii Prosp. 31, Moscow 119991, Russia b Department of Chemistry, University of Durham, South Road, Durham DH1 3LE, UK c The Casali Institute of Applied Chemistry, The Institute of Chemistry, The Hebrew University of Jerusalem, Jerusalem 91904, Israel |
| Abstract: | Several alkali metal hydroxoantimonates, K2Sb(O)(OH)5], NaSb(OH)6], CsSb(OH)6] and Cs2Sb2(μ-O)2(OH)8] were isolated from aqueous solutions and characterized by single crystal and powder X-ray diffraction studies and by FTIR and thermal analysis. Crystal structures involving Sb(O)(OH)5]2− were never anticipated before, and this is also the first disclosure of a dinuclear antimonate Sb2(μ-O)2(OH)8]2−. Aqueous antimonate solutions of different pH were studied by high resolution electrospray mass spectrometry showing pH indifferent spectra and predominance of the mono and dinuclear antimonate species at pH 4-10. |
| Keywords: | Antimonite Antimony Hydroxo complex Crystal structure Mass spectrometry |
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