Title of article :
A single-molecular magnet: [Mn12O12(O2CCH2Br)16(H2O)4]
Author/Authors :
Hui-Lien Tsai، نويسنده , , Da-Min Chen، نويسنده , , Chen-I Yang، نويسنده , , Tyn-Yih Jwo، نويسنده , , Ching-Shuei Wur، نويسنده , , Gene-Hsiang Lee، نويسنده , , Yu Wang، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2001
Abstract :
The synthesis, X-ray crystal structure and magnetic properties of a new dodecanuclear manganese complex [Mn12O12(O2CCH2Br)16(H2O)4] · 4CH2Cl2(2) · 4CH2Cl2 are reported. Complex 2 · 4CH2Cl2 crystallizes in tetragonal space group I41/a with the following cell dimensions at 293(2) K: a=b=26.697(4) Å, c=13.246(4) Å, and Z=4. The results of DC and AC magnetic susceptibility studies are described. DC measurements show the presence of hysteresis loops, and the out-of-phase component of AC magnetic susceptibilities has a frequency dependent maximum. Step-like features are seen on hysteresis loops and quantum mechanical tunneling could be the origin of these unusual relaxations.
Keywords :
Single-molecule magnet , Step-like hysteresis loop , Magnetic quantum tunneling , crystal structure
Journal title :
Inorganic Chemistry Communications
Journal title :
Inorganic Chemistry Communications
