Received 14 March 2013
The title adduct, [K(C30H24F12I3NO6)]I, gives an extended tape of cations linked through II- halogen bonds (XBs), two of them being quite short and one quite long. In the structure, the cation is hosted in a cavity formed by the arms of the podand which presents a closed conformation wherein two tetrafluoroiodobenzene rings are near parallel [dihedral angle = 15.8 (4)°; centroid-centroid distance = 3.908 (5) Å] and the third ring is closer to orthogonal [dihedral angles = 66.28 (14) and 75.20 (19)°] to the other two rings. The coordination sphere of the K+ cation is composed of the six O atoms, the N atom and an F atom in the ortho position of one of the rings.
Data collection: APEX2 (Bruker, 1998); cell refinement: SAINT (Bruker, 1998); data reduction: SAINT; program(s) used to solve structure: SIR2002 (Burla et al., 2003); program(s) used to refine structure: SHELXL2012 (Sheldrick, 2012); molecular graphics: ORTEP-3 (Farrugia, 2012) and Mercury (Macrae et al., 2006); software used to prepare material for publication: SHELXL2012.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: PK2473 ).
GC, PM, GR and GT acknowledge Fondazione Cariplo (projects 2009-2550 and 2010-1351) for financial support.
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