Dept. of Chemistry and Chemical Biology Baker Laboratory, Cornell University, Ithaca, NY, 14853, USA.
Dept. of Chemistry, CasCam, University of North Texas, Denton, TX, 76201, USA.
Chem Commun (Camb). 2022 Aug 30;58(70):9818-9821. doi: 10.1039/d2cc03838b.
The exposure of CrCl(THF) to 1 equiv. of TEMPO and 1 equiv. [TEMPO]Na afforded (η-O,N-TEMPO)CrCl (1, 67%); addition of [TEMPO]Na to 1 yielded (η-O,N-TEMPO)Cr(TEMPO) (2). Both 1 and 2 exhibit pseudo-pentagonal planar (PPP) geometry, instead of myriad alternatives. Calculations and spectral studies suggest the solid-state geometry persists in solution.
CrCl(THF) 与 1 当量的 TEMPO 和 1 当量的[TEMPO]Na 反应，生成(η-O,N-TEMPO)CrCl（1，67%）；向 1 中加入[TEMPO]Na 生成(η-O,N-TEMPO)Cr(TEMPO)（2）。1 和 2 均表现出拟五配位的平面（PPP）几何构型，而不是多种可能的构型。计算和光谱研究表明，固态几何构型在溶液中得以保持。
