M^′_0.2Mn_0.8PS₃·0.25H₂O materials are obtained by a mild microwave assisted reaction (M′ = Co^II, Ni^II, Cu^II, Zn^II), which permitted us to obtain the first copper(II) bimetallic phase. All these materials have a lower energy gap and antiferromagnetic interactions with lower values of the Weiss constant, than that of the pristine phase MnPS₃.