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Title: Cs[Tf 2N]: a second polymorph with a layered structure

Here, the structural determination of the ionic liquid, caesium bis­[(tri­fluoro­meth­yl)sulfon­yl]imide or poly[[ μ4-bis­[(tri­fluoro­meth­yl)sulfon­yl]imido]caesium(I)], Cs[N(SO 2CF 3) 2] or Cs[Tf 2N], reveals a second polymorph that also crystallizes in a layer structure possessing monoclinic P2 1/c symmetry at 120 K instead of C2/c for the known polymorph. The caesium ions in the cationic layers are coordinated by the sulfonyl groups of the bis­triflimide mol­ecules from anion layers while the tri­fluoro­methyl groups are oriented in the opposite direction, forming a non-polar surface separating the layers.
Authors:
ORCiD logo [1] ; ORCiD logo [1] ; ORCiD logo [1] ; ORCiD logo [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Report Number(s):
LA-UR-17-31306
Journal ID: ISSN 2056-9890; ACSECI
Grant/Contract Number:
AC52-06NA25396
Type:
Accepted Manuscript
Journal Name:
Acta Crystallographica. Section E, Crystallographic Communications
Additional Journal Information:
Journal Volume: 74; Journal Issue: 4; Journal ID: ISSN 2056-9890
Publisher:
International Union of Crystallography
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Ionic Liquid, Bistriflimide, Layered Structure
OSTI Identifier:
1435532

Stritzinger, Jared Tyler, Droessler, Janelle E., Scott, Brian Lindley, and Goff, George Scott. Cs[Tf 2N]: a second polymorph with a layered structure. United States: N. p., Web. doi:10.1107/S2056989018004401.
Stritzinger, Jared Tyler, Droessler, Janelle E., Scott, Brian Lindley, & Goff, George Scott. Cs[Tf 2N]: a second polymorph with a layered structure. United States. doi:10.1107/S2056989018004401.
Stritzinger, Jared Tyler, Droessler, Janelle E., Scott, Brian Lindley, and Goff, George Scott. 2018. "Cs[Tf 2N]: a second polymorph with a layered structure". United States. doi:10.1107/S2056989018004401. https://www.osti.gov/servlets/purl/1435532.
@article{osti_1435532,
title = {Cs[Tf 2N]: a second polymorph with a layered structure},
author = {Stritzinger, Jared Tyler and Droessler, Janelle E. and Scott, Brian Lindley and Goff, George Scott},
abstractNote = {Here, the structural determination of the ionic liquid, caesium bis­[(tri­fluoro­meth­yl)sulfon­yl]imide or poly[[μ4-bis­[(tri­fluoro­meth­yl)sulfon­yl]imido]caesium(I)], Cs[N(SO2CF3)2] or Cs[Tf2N], reveals a second polymorph that also crystallizes in a layer structure possessing monoclinic P21/c symmetry at 120 K instead of C2/c for the known polymorph. The caesium ions in the cationic layers are coordinated by the sulfonyl groups of the bis­triflimide mol­ecules from anion layers while the tri­fluoro­methyl groups are oriented in the opposite direction, forming a non-polar surface separating the layers.},
doi = {10.1107/S2056989018004401},
journal = {Acta Crystallographica. Section E, Crystallographic Communications},
number = 4,
volume = 74,
place = {United States},
year = {2018},
month = {3}
}

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