Synthesis and Magnetic Properties of Trinuclear and Heptanuclear Manganese Complexes

• Main Authors: Pei-Rung Gan, 甘珮蓉
• Other Authors: En-Che Yang
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/44608841516719944637

碩士 === 輔仁大學 === 化學系 === 103 === The syntheses, X-ray structures and magnetic properties of a new trinuclear complex [Mn3O(mhaep)3(MeOH)3]．(ClO4)．MeOH (3), a new heptanuclear complex [Mn6Na(heamp)6]．3.5CH3OH (4) and a new heptanuclear complex [Mn6Li(heamp)6]．XClO4 (5) are reported. The compound (3) is synthesized from compound (1) 2-N,N-[methyl(2-hydro- xymethyl)aminoethyl]phenol (mhaepH2) ligand and Mn(ClO4)2·6H2O. The dc magnetic susceptibility and reduced magnetization revealed that compound (3) has S = 6, D = -0.17 cm-1, E = -0.01 cm-1, g = 1.89 and J = 3.72 cm-1. The compound (4) and (5) are synthesized from compound (2) 2-[N,N-di(2-hydroxyethyl)aminomethyl]phenol (heampH3) ligand, Mn- (ClO4)2·6H2O and NaClO4．H2O or LiClO4. The compound (4) and (5) are composed of one NaI or LiI as a centere which surrounding by a hexagon consisted by six MnIII. The ac magnetic susceptibility measurements exhibited compound (4) and (5) have out of phase signals, this means that they have SMM behavior.