• Phase transitions in A4Li(HSO4)3(SO4); A = Rb, K: Single crystal X-ray diffraction studies

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      https://www.ias.ac.in/article/fulltext/jcsc/115/05-06/0473-0490

    • Keywords

       

      Phase transition; ferroelastic; cryo-crystallography; crystal structure

    • Abstract

       

      The crystal structure of ferroelastic Rb4Li(HSO4)3(SO4) has been determined at two temperatures, which indicates a structural phase transition, tetragonal P43 witha = 7.629(1) Å,c = 29.497(2) Å at 293 K and monoclinic P21 witha = 7.583(3) Å,b = 29.230(19) Å,c = 7.536(5) Å,β = 90.14(1)° at 90 K. The crystal structure of K4Li(HSO4)3(SO4)4 has also been determined at two temperatures, tetragonalP41 witha = 7.405(1) Å,c = 28.712(6) Å at 293 K and tetragonalP41 witha = 7.371(5) Å,c = 28.522(5) Å at 100 K. The overall coordination features in both the structures have been analysed in terms of bond valence sum calculations.

    • Author Affiliations

       

      G Nalini1 T N Guru Row1

      1. Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore - 560 012, India
    • Dates

       
  • Journal of Chemical Sciences | News

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