Isolation and Characterization of a Non‐Rigid Hexamethylbenzene–SO²⁺ Complex

Abstract

During our studies towards the preparation of the pentagonal‐pyramidal hexamethylbenzene dication C6(CH3)62+, we isolated the unprecedented dicationic species C6(CH3)6SO2+ (AsF6−)2 from the reaction of hexamethylbenzene with a mixture of anhydrous HF, AsF5, and liquid SO2. This compound can be understood as a complex of unknown SO2+ with hexamethylbenzene. Herein, we report on its synthesis, molecular structure, and spectroscopic characterization.

SO2+: Closing a Gap in Sulfur Oxide Chemistry

“…Given our and many other research group's interest in the activation of small molecules in general and SO 2 in particular, we were amazed to read the very recent findings by Malischewski and Seppelt, who are both are well known for their fascinating synthetic efforts utilizing superacidic media . Strictly anhydrous SO 2 used as either a reactant or as a solvent was thought to be remarkably stable with regards to protonation or oxidation reactions .…”

From polygons to polyhedra through intermediate structures. A shape measures study of six-atom inorganic rings and clusters

“…4a), 27 that has a small shape measure relative to the esTSP-6 (0.80). A pentagonal pyramidal shape, on the other hand, nicely corresponds to the geometry of the C 6 core of the Hogeveen dication 28,29 (MeC-Cp*) 2+ (Fig. 4b), with a shape measure S(PPYR-6) of 0.02.…”

Isolierung und strukturelle Charakterisierung der achtfach protonierten Octacyanometallate [M(CNH)8]4+ (M=MoIV,WIV) aus Supersäuren

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