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Updated: May 10, 2026

Chemoselective Preparation of 1-Iodoalkynes, 1,2-Diiodoalkenes, and 1,1,2-Triiodoalkenes Based on the Oxidative Iodination of Terminal Alkynes
Published on: September 12, 2018
(Tris{2-[2-(2,3,5,6-tetra-fluoro-4-iodo-phen-oxy)eth-oxy]eth-yl}amine)-potassium iodide
Gabriella Cavallo1, Hannes Neukirch, Pierangelo Metrangolo
1NFMLab, Department of Chemistry, Materials and Chemical Engineering, "G. Natta", Politecnico di Milano, Via Mancinelli, 7, I-20131 Milano, Italy.
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.
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