Magnetization studies of Tris(ethylenediamine)nickel(II) complexes down to 2 K

Abstract

Single crystal magnetization studies of Ni(en)₃(NO₃)₂ down to 2 K show that there are appreciable antiferromagnetic interactions parallel and perpendicular to the hexagonal c axis. Deuteration of the NH₂ groups has no effect on the average magnetic moment of the compound and it seems that hydrogen bonding does not play a dominant role in the exchange mechanism. The structurally related compound Ni(en)₃SO₄ behaves as a simple paramagnet down to 2 K.