Stritzinger Jared T, Droessler Janelle E, Scott Brian L, Goff George S
Materials Physics and Applications Division, Associate Directorate for Experimental Physical Sciences, Los Alamos National Laboratory, Los Alamos, New Mexico, 87545, USA.
Acta Crystallogr E Crystallogr Commun. 2018 Mar 23;74(Pt 4):551-554. doi: 10.1107/S2056989018004401. eCollection 2018 Apr 1.
The structural determination of the ionic liquid, caesium bis-[(tri-fluoro-meth-yl)sulfon-yl]imide or poly[[μ-bis-[(tri-fluoro-meth-yl)sulfon-yl]imido]caesium(I)], Cs[N(SOCF)] or Cs[TfN], reveals a second polymorph that also crystallizes in a layer structure possessing monoclinic 2/ symmetry at 120 K instead of 2/ for the known polymorph [Xue (2002 ▸). , 1535-1545]. The caesium ions in the cationic layers are coordinated by the sulfonyl groups of the bis-triflimide mol-ecules from anion layers while the tri-fluoro-methyl groups are oriented in the opposite direction, forming a non-polar surface separating the layers. The layer direction is (100).
离子液体双[（三氟甲基）磺酰基]亚胺铯或聚[[μ-双[（三氟甲基）磺酰基]亚氨基]铯（I）]，Cs[N(SO₂CF₃)₂]或Cs[Tf₂N]的结构测定揭示了第二种多晶型物，其在120 K时也以具有单斜2/m对称性的层状结构结晶，而不是已知多晶型物的2/m[薛（2002▸）。，1535 - 1545]。阳离子层中的铯离子由来自阴离子层的双三氟甲磺酰亚胺分子的磺酰基配位，而三氟甲基则朝相反方向取向，形成分隔各层的非极性表面。层方向为(100)。
