A 2-D bimetallic assembly with bridging cyanide ions

A novel cyanide-bridged bimetallic assembly, [Cu(1,3-Pn)(2)](2)[Fe-III(CN)(6)]ClO4 . 2H(2)O (1,3-Pn = 1,3-diaminopropane), derived from [Fe(CN)(6)](3)- building blocks and four-coordinated bisdiamine metal(II) ions [Cu(1,3-Pn)(2)](2+) is described and characterized by X-ray crystal analysis. The compound contains a two-dimensional network structure extended through Fe-III-CN-Cu linkages. Mossbauer experimental results indicate that the iron is ferric (Fe3+) in the complex. Cryomagnetic measurements reveal an antiferromagnetic exchange interaction between the nearest paramagnetic metal ions in the compound. The exchange mechanism was also discussed.