Spin glass ordering in heterometallic carbonates with pillared layer structure: K4[Mn(H2O)4{Ru2(CO3)4}2]·4H2O

Half of Ru2 dimers between the neighboring layers {Ru2(CO3)4}n3n− are linked by Mn(H2O)42+ in a trans manner forming a pillared layer structure of {Mn(H2O)4[Ru2(CO3)4]2}n4n−. Magnetism measurement indicates that it shows a spin-glass behavior ordering below 4.5 K.