Hydration-switchable charge transfer in the first bimetallic assembly based on the [Ni(cyclam)](3+)--magnetic CN-bridged chain {(H3O)[Ni(III)(cyclam)][Fe(II)(CN)6]·5H2O}n.

Hydration-switchable charge transfer in the first bimetallic assembly based on the [Ni(cyclam)](3+)--magnetic CN-bridged chain {(H3O)[Ni(III)(cyclam)][Fe(II)(CN)6]·5H2O}n.