title: Pericyclic transition-state-like aromaticity in the inorganic ions Se2i4(2+) and S2O4(2-).
abstract: We show, by means of quantum chemical calculations, that the inorganic ions Se2I4(2+) and S2O4(2-), whose structures have been long-known and well-characterized, have aromaticity resulting from through-space conjugation, analogous to the aromaticity in the transition states of some pericyclic reactions, such as Cope rearrangements and Diels-Alder reactions.
authors.affiliation: State Key Laboratory for Physical Chemistry of Solid Surfaces and Center for Theoretical Chemistry, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China.
authors.forename: Qin
authors.initials: Q
authors.lastname: Zhang
authors.forename: Xin
authors.initials: X
authors.lastname: Lu
authors.forename: Rong-Bin
authors.initials: RB
authors.lastname: Huang
authors.forename: Lan-Sun
authors.initials: LS
authors.lastname: Zheng