in tetrahydrofuran all operations in sealed evacuated tubes with thoroughly dried and degassed solvents; soln. of t-BuOCu added to a blue-green soln. of Sm complex; ppt. sepd. and washed with 10percent HNO3; ppt. of CuI insoluble in HNO3 sepd. off; remaining soln. concd. and kept at 80° until complete dissolution of a fine ppt.; cooled slowly to ca. 20°; crystal sepd.; dried; identified by elem. anal., IR;

in tetrahydrofuran all operations in sealed evacuated tubes with thoroughly dried and degassed solvents; soln. of t-BuOCu added to a blue-green soln. of Sm complex; ppt. sepd. and washed with 10percent HNO3; ppt. of CuI insoluble in HNO3 sepd. off; remaining soln. concd. and kept at 80° until complete dissolution of a fine ppt.; cooled slowly to ca. 20°; crystal sepd.; dried; identified by elem. anal., IR;