Oxalate-bridged magnetic compounds

There are also carboxylates15 (Section 17-E-10), phosphates, catecholates, and oxalates. Most of the divalent iron oxalato compounds have a chain structure but the product of photoreduction of mononuclear [bipyH] [Feni(ojc)2(H20)2] gives a three-dimensional anionic polymeric network of [Fe2I(ox)3]2 1 and [Fen(bipy)3]2+ ions.16 Magnetic exchange typically occurs through the oxalate bridges.17 Six-coordinate iron(II) a-amino acid complexes are readily obtained from the reaction of the 4-coordinate Fe(mes)2(phen) and the protic amino add, AH, in THF 18... 

MAGNETIC COMPOUNDS CONTAINING BOTH OXALATE AND CYANIDE BRIDGING LIGANDS... 

The possibilities for linking paramagnetic metal ions via oxalate bridges in three-dimensional lattices and their possible applications in the field of molecule-based magnets have since provided the momentum for subsequent investigations into the self-assembly of three-dimensional oxalato-bridged metal complexes. Decurtins et al. reported the structural characterization of three additional compounds, one homometallic with the same network stoichiometry, [Mn 2(ox)3]2 ", as the Fe compound above, and two bimetallic with network stoichiometries of... 

Design of molecular magnets based on mechanism (i) has been pursued by Kahn et al The strategy is to employ bridging groups such as the various oxalate derivatives to form extended chains wherein metal centres of different spins (e.g. Cu(II) and Mn(II) alternate. [Cu Mn (pbaOH)]-3H20 is a typical example of this kind. Interestingly, dehydration of a water molecule from this compound raises the to 30 K (Nakatani et... 

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