om020237z_si_001.cif (54.2 kB)
The Unusual Stability of Homoleptic Di- and Tetravalent Chromium Alkyls
dataset
posted on 2002-08-03, 00:00 authored by Carola Schulzke, Dave Enright, Hiroyasu Sugiyama, Guy LeBlanc, Sandro Gambarotta, Glenn P. A. Yap, Laurence K. Thompson, David R. Wilson, Rob DuchateauReaction of CrCl3(THF)3 with 3 equiv of R−M [R = Me3CCH2 (a), Me3SiCH2 (b)] afforded
either the previously reported tetravalent homoleptic R4Cr (1a, b) [M = MgCl] or the
unprecedented divalent and tetranuclear homoleptic [R2Cr]4 (2b) [M = Li]. Both types of
compounds display a remarkable chemical inertness toward proton transfer agents but
readily react with ethylene.
