Synthesis of chiral and C2-symmetric iron(II) and cobalt(II) complexes bearing a new tetradentate amine ligand system

Article abstract of DOI:10.1016/0022-328X(95)00119-B

A synthesis for the new tetrapodal ligands -1,2-ethylene diamine (L₁) (3a) and -1,2-ethylene diamine (L₂) (3b) and for the related octahedral complexes (L_1,2)FeCl2 (6a and 6b) and (L_1,2)CoCl2 (7a and 7b) is given.The solid state structures of 3b and 6a have been determined.Three different modes are possible for a tetradentane coordination of L1,2 to FeCl2 or CoCl2.In 6a the ligand adopts a single chiral geometry around the Cl-Fe-Cl plane.Keywords: Iron; Cobalt; Tetradentane amine ligand; Solid state structures; Chirality