Binuclear cyano-bridged complex derived from [MnIII(salpn)] and [FeIII(CN)6]: Synthesis, structure and magnetic properties

• A novel binuclear complex [NH3(CH2)3NH3] {[Mn(salpn)(H2O)][Fe(CN)6]} was prepared, structurally and magnetically characterized.
• [MnIII(salpn)(H2O)] and [FeIII(CN)6] moieties are linked between each other via one bridge cyano group.
• Complex exhibits slow magnetic relaxation, suggesting SMM type behavior.

The reaction of the neutral [Mn(salpn)C(CN)3(H2O)] (salpn2 − = N,N′-1,3-propylenebis(salicylideneiminato) dianion) with [FeIII(CN)6]3 − in the presence of strong oxidizer (NH4)2S2O8 yields a binuclear anion complex [NH3CH2CH2CH2NH3]2 +{[MnIII(salpn)(H2O)][FeIII(CN)6]}2 − (1). Its structure, DC and AC susceptibility have been studied. Frequency dependence of the AC susceptibility characteristic for single-molecule magnets has been found.

Binuclear anion complex {[MnIII(salpn)(H2O)][FeIII(CN)6]}2 −[NH3CH2CH2CH2NH3]2 + was synthesized as the product of reaction between [Mn(salpn)C(CN)3(H2O)], K3[Fe(CN)6 and (NH4)2S2O8. Its structure and magnetic properties were studied. The complex shows slow magnetic relaxation characteristic of single-molecule magnets.Figure optionsDownload as PowerPoint slide