Reduction of the 8MnIII,4MnIV complex [Mn 12O12(O2CEt)16(H2O) 3] with PPh4l in CH2Cl2 leads to isolation of (PPh4)[Mn12O12(O 2CEt)16(H2O)4] (3) whose crystal structure shows that the added electron is localized on a formerly Mn III ion to give a trapped-valence MnII,7Mn III,4MnIV situation; DC and AC magnetic susceptibility studies show that 3 has an S = 19/2 ground state and that it displays a superparamagnet-like non-zero, frequency-dependent, out-of-phase response in the AC susceptibility behaviour that is extremely unusual for a molecular species and unique for an ionic species.
|Number of pages||2|
|Journal||Journal of the Chemical Society, Chemical Communications|
|Publication status||Published - 1994 Dec 1|
All Science Journal Classification (ASJC) codes
- Molecular Medicine