Structures and magnetism of bimetallic octacyanometallates: honeycomb-like [Mo(CN)8Ni2(pn)4]n·4nH2O and binuclear [Mo(CN)8Ni(en)2(H2O)][Ni(en)3]·2H2O (pn=1,3-diaminopropane, en=1,2-diaminoethane)

Bimetallic octacyanometallates [Mo(CN)8Ni2(pn)4]n·4nH2O (1) and [Mo(CN)8Ni(en)2(H2O)][Ni(en)3]·2H2O (2) based on [Mo(CN)8]4− were synthesized in aqueous solution, and their crystal and molecular structures have been determined. The complex [Mo(CN)8Ni2(pn)4]n·4nH2O (1) consists of novel two-dimensional honeycomb-like layers. The complex [Mo(CN)8Ni(en)2(H2O)][Ni(en)3]·2H2O (2) contains a binuclear anion [Mo(CN)8Ni(en)2(H2O)]2−,[Ni(en)3]2+ cation and two lattice water molecules. Magnetic studies suggest a possible weak antiferromagnetic interaction between Ni2+ ions in 1.