(Tris{2-[2-(2,3,5,6-tetra-fluoro-4-iodo-phen-oxy)eth-oxy]eth-yl}amine)-potassium iodide

Acta Crystallogr Sect E Struct Rep Online. 2013 Apr 24;69(Pt 5):m284-5. doi: 10.1107/S1600536813010532. Print 2013 May 1.

Abstract

The title adduct, [K(C30H24F12I3NO6)]I, gives an extended tape of cations linked through I⋯I(-) 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 tetra-fluoro-iodo-benzene 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.