Synthesis and Magnetism of Cobalt(II)–Manganese(II)–Cobalt(II) Trinuclear Complexes with N,N′-Disalicylidenealkanediamines

Cobalt(II)–manganese(II)–cobalt(II) trinuclear complexes were synthesized by reacting N,N′-disalicylidenealkanediaminatocobalt(II) and manganese(II) halide in a 2:1 mole ratio. Cryomagnetic measurements indicated an antiferromagnetic spin-exchange interaction operating between the low-spin cobalt (II) and the high-spin manganese(II) ions, exchange integrals being estimated at −8–−12 cm−1.