Syntheses, structures and magnetic properties of mixed-valence pentanuclear [Mn3IIMn2III] and hexanuclear [Co4IICo2III] complexes derived from 3-formylsalicylic acid

Mixed-valence pentanuclear manganese complex, [{MnIIMnIII(fsatren)}2MnII(H2O)4] · n  (sol) ([Mn3IIMn2III], H6fsatren = tris[(2-hydroxy-3-carboxybenzylidene)aminoethyl]amine, sol = H2O or MeOH), and hexanuclear cobalt complex, [Co4IICo2III(fsaea)2(OMe)4(NO3)2(OAc)2(MeOH)2] ([Co4IICo2III], H3fsaea = 3-[N  -(2-hydroxyethyl)formimidoyl]-salicylaldehyde) were prepared and their magnetic properties were studied. [Mn3IIMn2III] has a linear tetranuclear core, whereas [Co4IICo2III] has a face shared incomplete tetra cubane core.

Graphical abstractMixed-valence pentanuclear manganese complex and hexanuclear cobalt complex with Schiff-base ligand derived from 3-formylsalicylic acid have been prepared. Structures and magnetic properties of these compounds are reported.Figure optionsDownload full-size imageDownload as PowerPoint slide