A New Porous Three-Dimensional Iron(Ii) Coordination Polymer With Solvent-Induced Reversible Spin-Crossover Behavior

A new Hofmann-type porous coordination polymer [Fe(dpni){Ag-(CN)(2)}(2)]center dot 4CH(3)CN (dpni = N,N'-di-(4-pyridyl)-1,4,5,8-naphthalenetetracarboxydiimide) with the topology of pcu net has been synthesized. It exhibits two-step spin-crossover behavior. Moreover, reversible changes between incomplete and two-step spin-crossover properties were associated with the desorption/resorption of the CH3CN solvent molecules.