Received 20 November 2013
The asymmetric unit of the title compound, [Rb2(P2S6)(C12H24O6)2]·2CH3CN, contains one half of an [Rb(18-crown-6)2]2[P2S6] unit and one acetonitrile solvent molecule. The [Rb(18-crown-6)]2[P2S6] unit is completed by inversion symmetry. Its Rb+ ion is situated near the centre of the macrocyclic cavity, but is displaced by 0.8972 (1) Å from the O atoms of the crown in the direction of the [P2S6]2- moiety. The overall coordination number of the cation is eight, defined by the six crown ether O atoms and by two terminal S atoms of the [P2S6]2- anion. The hexathiometadiphosphate anion is built up from two tetrahedral PS4 units joined together by a common edge. The crystal structure is characterized by alternating layers of [Rb(18-crown-6)]2[P2S6] and acetonitrile solvent molecules stacked along .
For the synthesis of hexathiometadiphosphates, see: Thilo & Ladwig (1962). For the crystal structures of hexathiometadiphosphates, see: Toffoli et al. (1978); Brockner et al. (1985). For the crystal structures of alkali crown ether hexathiometadiphosphates, see: Gjikaj et al. (2005, 2006).
Data collection: X-AREA (Stoe & Cie, 2002); cell refinement: X-AREA; data reduction: X-AREA; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 for Windows (Farrugia, 2012); software used to prepare material for publication: SHELXL97, PLATON (Spek, 2009) and publCIF (Westrip, 2010).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: WM2785 ).
Brockner, W., Becker, R., Eisenmann, B. & Schäfer, H. (1985). Z. Anorg. Allg. Chem. 520, 51-58.
Farrugia, L. J. (2012). J. Appl. Cryst. 45, 849-854.
Gjikaj, M., Adam, A. & Brockner, W. (2006). Z. Anorg. Allg. Chem. 632, 279-283.
Gjikaj, M., Adam, A., Duewel, M. & Brockner, W. (2005). Z. Kristallogr. New Cryst. Struct. 220, 67.
Sheldrick, G. M. (2008). Acta Cryst. A64, 112-122.
Spek, A. L. (2009). Acta Cryst. D65, 148-155.
Stoe & Cie (1999). X-SHAPE. Stoe & Cie GmbH, Darmstadt, Germany.
Stoe & Cie (2001). X-RED. Stoe & Cie GmbH, Darmstadt, Germany.
Stoe & Cie (2002). X-AREA. Stoe & Cie GmbH, Darmstadt, Germany.
Thilo, E. & Ladwig, G. (1962). Monatsber. Dtsch Akad. Wiss. Berlin, 4, 720-724.
Toffoli, P., Khodadad, P. & Rodier, N. (1978). Acta Cryst. B34, 3561-3564.
Westrip, S. P. (2010). J. Appl. Cryst. 43, 920-925.