Li NMR Spectroscopy on Crystalline Li₁₂Si₇: Experimental Evidence for the Aromaticity of the Planar Cyclopentadienyl‐Analogous Si₅⁶⁻ Rings

Abstract

An aromatic relation: The upfield-shifted NMR signal of the Li ions sandwiched between two Si56− rings in Li12Si7 points to carbon-like aromaticity of a ring formed exclusively from silicon atoms (see structure (left; Si blue, Li orange) and NMR signal (right)). Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.