Supporting Information for Ketenimine Formation Catalyzed by a High-Valent Cobalt Carbene in Bulky Alkoxide Ligand Environment Amanda Grass a , Nicholas S. Dewey, b Richard L. Lord* b , and Stanislav Groysman* a a Department of Chemistry, Wayne State University, 5101 Cass Ave, Detroit, MI, 48202, USA. E-mail: groysman@chem.wayne.edu b Department of Chemistry, Grand Valley State University, Allendale, MI, 49401, USA. E-mail: lordri@gvsu.edu