Trimethylenediamine Complexes. I. Some Trimethylenediamine Complexes Derived from trans-[CoCl2tn2]Cl in Methanol

Several diacidobis(trimethylenediamine)cobalt(III) complexes including nitrate, nitrite and thiocyanate ions as ligands have been prepared by ligand substitution reactions of trans-dichlorobis(trimethylenediamine)cobalt(III) chloride in methanol. All these compounds were assumed to have the trans configuration according to the Baldwin’s criterion based on the CH2 rocking vibration. Isomeric pairs of chloronitro and chloronitrito complexes were also characterized by means of infrared data.