Bimetallic and trimetallic chains of Fe-CN-Ln complexes: Synthesis, structural characterization, and magnetic properties

Two new one-dimensional cyanide-bridged complexes, [Gd (DMF)(4)(H2O)(2){Fe(CN)(6)}]center dot H2O (1) and {[CuL}Gd(H2O)(3){Fe(CN)(6)}]center dot 3H(2)O (2) (H2L = N,N'-(2-Hydroxypropane-1,3-diyl)bis(3-methoxysalicylaldiimine) were obtained in the attempt of constructing heterotrimetallic 3d-3d'-4f systems with these reaction precursors. Interestingly, the two complexes show rather comparable structures with a chain-like skeleton, although one features a typical bimetallic structure while the other behaves as a trimetallic system. To the best of our knowledge, the complexes are new in the Fe-CN-Ln family, which is especially suitable for magnetic study of the role of the third metal ions in the system. X-ray diffraction results clearly indicated the formation of the interesting chain structures of these complexes, which were further confirmed by magnetic investigation.

Automated summary

Two new one-dimensional cyanide-bridged complexes with chain-like skeleton structures were synthesized, one featuring a typical bimetallic structure and the other behaving as a trimetallic system. These complexes are novel in the Fe-CN-Ln family and are ideal for studying the magnetic properties of the third metal ions in the system. X-ray diffraction and magnetic investigations confirmed the formation of these interesting chain structures.