第六族中的 TEMPO 协调和反应性；拟五角形平面（η-TEMPO）CrX（X = Cl，TEMPO）。
TEMPO coordination and reactivity in group 6; pseudo-pentagonal planar (η-TEMPO)CrX (X = Cl, TEMPO).
机构信息
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.
出版信息
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。
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