Rare nuclearities, new structural motifs, and slow magnetization relaxation phenomena in manganese cluster chemistry: A Mn15Na2 cage from the use of triethanolamine/pivalate/azide “blend”

The combination of azide, carboxylate (pivalate and in situ generated formate) and triethanolamine ligands in higher oxidation state Mn cluster chemistry has afforded a new pentadecanuclear, mixed-valence(II,III) compound with a large S and a negative D value. The unprecedented [MnII2MnIII13] cluster exhibits frequency-dependent out-of-phase (χM″) signals, characteristics of the superparamagnetic-like slow relaxation of an SMM.

The combination of azide, carboxylate and triethanolamine ligands in higher oxidation state Mn cluster chemistry has yielded a new {MnII2MnIII13Na2} cluster with a large S = 14 ground state and frequency-dependent out-of-phase tails of signals, characteristics of the superparamagnetic-like slow relaxation of a single-molecule magnet.Figure optionsDownload as PowerPoint slide