Syntheses, crystal structures and magnetic properties of two novel layered compounds: [Fe3(C2O4)3(4,4′-bpy)4] and [Co(C2O4)(4,4′-bpy)] (4,4′-bpy = 4,4′-bipyridine) †

• DOI: 10.1039/a809738k
• Publication Date: 2002-07-26T09:20:32Z
• Authors: Li-Min Zheng; Xia Fang; Kwang-Hwa Lii; Hui-Hua Song; Xin-Quan Xin; Hoong-Kun Fun; Kandasamy Chinnakali; Ibrahim Abdul Razak
• Keywords: Square tiling; Bipyridine; 4,4'-Bipyridine; 2,2'-Bipyridine

The combination of 4,4′-bipyridine (4,4′-bpy) and oxalate ligands has resulted in the formation two novel layered compounds [Fe3(C2O4)3(4,4′-bpy)4] 1 [Co(C2O4)(4,4′-bpy)] 2. Both exhibit two-dimensional layer structures. That consists iron(II) chains, with terminal bridging 4,4′-bpy stacking alternately between chains. structure 2 contains linear chains cobalt(II) which are cross-linked by molecules a perpendicular manner, leading to square grid sheets rectangular windows. Magnetic measurements reveal that weak antiferromagnetic interactions mediated both compounds.