organosamarium UK /ɔːˌɡænəʊ.səˈmɛəɹi.əm/US /ɔɹˌɡænoʊ.səˈmɛɹi.əm/ adjective1 •Describing any organic compound containing a carbon to samarium bond.This reaction proceeds through α-addition of an organosamarium intermediate to the isocyanide resulting in an (α-iminoalkyl) samarium complex which can act as an acyl anion equivalent. — 2006