The prepare of four organotin (IV) compounds ([2,6-bis(dimethylaminomethyl)phenyl](n-butyl)(RR2)-R-1 starmane, with R-1 = R-2 = nBu (1), R-1 = nBu, R-2 = Cl (2), R-1 = nBu, R-2 = Br (3) and R-1 = R-2 = Br (4)) in various solvens and et various t