They form 2-dimensional layered hexagonal structures related to that of cadmium diiodide
, in which the metal-chalcogen bonding within the layers is very strong, whilst that between the layers is much weaker (van der Waals interactions) - i.e.
Llavona, Synthesis of (z)-a-chloro-a, b-Unsaturated Esters with Complete Stereoselectivity Promoted by Samarium Diiodide
, Tetrahedron lett., 45, 4665 (2004).
The default configurations of triphenylphosphine diiodide
(Ph [sub]3 PI[sub]2) and silver trifluoromethanesulfonate (AgOTf) solid-phase extraction (SPE) cartridges were cancelled and 57% hydriodic acid solution was used to accomplish this step instead.
Preliminary trials of bistrimethylammonium decane and pentane diiodide
(C10 and C5) in man.