Mechanistic Insight into the Initiation Step of the Coupling Reaction of Oxetane or Epoxides and CO<sub>2</sub> Catalyzed by (salen)CrX Complexes
作者:Donald J. Darensbourg、Adriana I. Moncada
DOI:10.1021/ic801231p
日期:2008.11.3
are characterized both in solution by infrared spectroscopy and in the solid-state by X-ray crystallography. All anions (X) afford six-coordinate chromium(III) PPN(+) or n-Bu4N(+) salts composed of trans-(salen)CrX2(-) species. Of the X groups investigated in (salen)CrX, chloride is easily displaced by the others, that is, the reaction of (salen)CrCl with 2 equiv of N3(-), CN(-), or NCO(-) quantitatively