Crystal and molecular structure of diphenyliodonium triiodide

Article abstract of DOI:10.1134/S0036023612020064

A new salt diphenyliodonium triiodide (C₁₂H₁₀I ₄) was obtained. The [C₁₂H₁₀I ⁺][I₃^-] compound was isolated as red brown crystals and studied by single-crystal X-ray diffraction. The structure of diphenyliodonium triiodide consists of separate, virtually linear I ₃^- anions and C₁₂H₁₀I⁺ cations. Strong intermolecular anion-anion (I₃ ^-?I₃^-) and anion-cation (I ₃^- ?I⁺) interactions in the crystal structure leads to a change in the symmetry of triiodide ions. The complex formation in the system organic cation iodide-elementary iodine was studied by spectrophotometry. The complex composition was found (1:1), and the stability constant of the complex in chloroform was determined (logβ = 3.91). Pleiades Publishing, Ltd., 2012.