Received 30 December 2012
The cation of the title salt, (C14H10NS2)[FeBr4], contains a flat central NC2S2 ring (r.m.s. deviation = 0.005 Å), with two attached phenyl rings that are almost coplanar [the dihedral angles between the mean planes are 2.4 (1) and 7.7 (1)° for the two phenyl rings]. The [FeBr4]- anion makes short BrS contacts [BrS = 3.4819 (8), 3.6327 (9) and 3.5925 (9) Å] and also bridges by way of short contacts to ring H atoms of a second cation held parallel to the first by -stacking, with a separation between the mean 1,2,4-dithiazolium rings of 3.409 Å. The closest contacts are between a phenyl ring centroid of one cation and the ipso C atom of the phenyl ring of another cation, for which the distance is 3.489 Å. The discrete dimers are linked laterally by further BrH short contacts, resulting in double sheets located parallel to the b axis and to the bisector of a and c.
For synthesis details, see: Corsaro et al. (1984); Liebscher & Hartmann (1977). For related structures, see: Clegg et al. (1996); Neels et al. (1986). For a description of the Cambridge Structural Database, see: Allen (2002). For bond lengths in tetrabromidoferrate complexes, see: Maithufi & Otto (2011); Bhattacharya & Sarkar (2010). For short-contact distances between stacked aryl rings, see: Martinez & Iverson (2012); McGaughey et al. (1998).
Data collection: APEX2 (Bruker, 2008); cell refinement: SAINT-Plus (Bruker, 2008); data reduction: SAINT-Plus; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: Mercury (Macrae et al., 2008); software used to prepare material for publication: publCIF (Westrip, 2010).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: QM2091 ).
The Natural Sciences and Engineering Research Council of Canada (NSERC) is gratefully acknowledged for a Discovery Grant. The diffractometer was purchased with the help of NSERC and the University of Lethbridge.
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