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The employment of 1,1,1-tris(hydroxymethyl)ethane ligand in higher oxidation state Mn cluster chemistry has yielded a new hexanuclear, mixed-valence (II,III,IV) compound with a rare [Mn 6 (μ 6 -O)] 18+ octahedral core. The Mn 6 molecule is completely ferromagnetically coupled and possesses an S=11 ground state, the maximum for a Mn II , 2Mn III , 3Mn...
The enneanuclear mixed-valent manganese cage [Mn9O7(OAc)11(thme)(py)3(H2O)2] 1 {Mn9} possesses an S=17/2 ground state as a result of an antiferromagnetic interaction between three ferromagnetically coupled MnIV ions and a wheel of four MnIII and two MnII ions. AC magnetization measurements show a frequency-dependent out-of-phase signal at 3.4 K and 997 Hz, indicative of single-molecule magnetism behaviour...
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