10.1021/om020237z.s001 Carola Schulzke Carola Schulzke Dave Enright Dave Enright Hiroyasu Sugiyama Hiroyasu Sugiyama Guy LeBlanc Guy LeBlanc Sandro Gambarotta Sandro Gambarotta Glenn P. A. Yap Glenn P. A. Yap Laurence K. Thompson Laurence K. Thompson David R. Wilson David R. Wilson Rob Duchateau Rob Duchateau The Unusual Stability of Homoleptic Di- and Tetravalent Chromium Alkyls American Chemical Society 2002 tetranuclear homoleptic Li divalent ethylene MgCl tetravalent homoleptic R 4 Cr proton transfer agents chemical inertness CrCl 3 type R 2 Cr 3 SiCH 2 3 CCH 2 Tetravalent Chromium Alkyls Reaction THF compounds display 2 b Unusual Stability Homoleptic Di 3 equiv 2002-08-03 00:00:00 Dataset https://acs.figshare.com/articles/dataset/The_Unusual_Stability_of_Homoleptic_Di-_and_Tetravalent_Chromium_Alkyls/3772473 Reaction of CrCl<sub>3</sub>(THF)<sub>3</sub> with 3 equiv of R−M [R = Me<sub>3</sub>CCH<sub>2</sub> (<b>a</b>), Me<sub>3</sub>SiCH<sub>2</sub> (<b>b</b>)] afforded either the previously reported tetravalent homoleptic R<sub>4</sub>Cr (<b>1a</b>,<b> b</b>) [M = MgCl] or the unprecedented divalent and tetranuclear homoleptic [R<sub>2</sub>Cr]<sub>4</sub> (<b>2b</b>) [M = Li]. Both types of compounds display a remarkable chemical inertness toward proton transfer agents but readily react with ethylene.