(4-Hydroxy-3,5-diiodophenyl)diphenylphosphine oxide, bis(4-hydroxy-3,5-diiodophenyl)(phenyl)
phosphine oxide, and tris(4-hydroxy-3,5-diiodophenyl)phosphine oxide were obtained via iodination reactions of
corresponding mono-, bis-, and tris(4-hydroxyphenyl)phosphine oxides. Single-crystal X-ray diffraction studies
showed each homologue forms O-H···O=P and π-stacking interactions with neighboring molecules to give inversion
related dimeric motifs.
Keywords: Halogen bonding, hydrogen bonding, iodination, phosphine oxides, X-ray crystallography.
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