<i>trans</i> Influences on Hypervalent Bonding of Aryl <i>λ</i>³‐Iodanes: Their Stabilities and Isodesmic Reactions of Benziodoxolones and Benziodazolones

Abstract

Large and small or twice moderate: Both combinations of trans influences of the substituents favor the formation of highly stable aryl λ3-iodanes ArILL′ (examples: PhI(OH)OTs and PhI(OAc)2). trans influences also seem to explain why iodosylbenzene adopts an oxo-bridged zigzag polymer structure in contrast to PhI(OH)2, which is monomeric.