摘要:
Several alkali metal hydroxoantimonates, K-2[Sb(O)(OH)(5)], Na[Sb(OH)(6)], Cs[Sb(OH)(6)] and Cs-2[Sb-2(mu-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 [Sb-2(mu-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. (C) 2011 Elsevier B.V. All rights reserved.