2018
DOI: 10.1002/ange.201811675
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Ryan Schwamm,
Mathew Anker,
Matthias Lein
et al.

Abstract: Abstract The potassium aluminyl complex K[Al(NONAr)] (NON=NONAr=[O(SiMe2NAr)2]2−, Ar=2,6‐iPr2C6H3) reacts with 1,3,5,7‐cyclooctatetraene (COT) to give K[Al(NONAr)(COT)]. The COT‐ligand is present in the asymmetric unit as a planar μ2‐η2:η8‐bridge between Al and K, with additional K⋅⋅⋅π‐aryl interactions to neighboring molecules that generate a helical chain. DFT calculations indicate significant aromatic character, consistent with reduction to [COT]2−. Addition of 18‐crown‐6 causes a rearrangement of the C8‐ca…

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