Synthesis and Magnetic Properties ofHeptanuclear Manganese Single Molecule Magnets
碩士 === 輔仁大學 === 化學系 === 99 === The synthesis, X-ray structure, magnetic properties and high-field electron paramagnetic resonance (HFEPR) of a new heptanuclear manganese cluster [Mn7(heamp)6].2(ClO4).4CH2Cl2.H2O is reported. The Mn7 is synthesized from [Mn3O(O2CMe)6(py)3](ClO4) and heampH3 ligand. T...
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ndltd-TW-099FJU000650212016-04-13T04:17:18Z http://ndltd.ncl.edu.tw/handle/19398637478760173302 Synthesis and Magnetic Properties ofHeptanuclear Manganese Single Molecule Magnets 七核錳單分子磁鐵的合成及磁性研究 Chen, Siou-Yin 陳秀銀 碩士 輔仁大學 化學系 99 The synthesis, X-ray structure, magnetic properties and high-field electron paramagnetic resonance (HFEPR) of a new heptanuclear manganese cluster [Mn7(heamp)6].2(ClO4).4CH2Cl2.H2O is reported. The Mn7 is synthesized from [Mn3O(O2CMe)6(py)3](ClO4) and heampH3 ligand. The compound is composed of one MnII as a centere which surrounding by a hexagon consisted by six MnIII. The dc magnetic susceptibilities and reduced magnetization revealed that the Mn7 has molecule spin of 19/2 and zero-field splitting of -0.16 cm-1. The ac magnetic susceptibility measurements exhibited the Mn7 has out-of-phase signals, is an single molecule magnet with the effective energy barrier of 12.9 cm-1. The high-field electron paramagnetic resonance (HFEPR) studies indicate the S = 19/2, g = 1.96, D = -0.16 cm-1. The HFEPR confirmed that the Mn7 is a new member of half-integer spin SMM. Yang, En-Che 楊恩哲 2011 學位論文 ; thesis 82 zh-TW |
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碩士 === 輔仁大學 === 化學系 === 99 === The synthesis, X-ray structure, magnetic properties and high-field electron paramagnetic resonance (HFEPR) of a new heptanuclear manganese cluster [Mn7(heamp)6].2(ClO4).4CH2Cl2.H2O is reported. The Mn7 is synthesized from [Mn3O(O2CMe)6(py)3](ClO4) and heampH3 ligand. The compound is composed of one MnII as a centere which surrounding by a hexagon consisted by six MnIII. The dc magnetic susceptibilities and reduced magnetization revealed that the Mn7 has molecule spin of 19/2 and zero-field splitting of -0.16 cm-1. The ac magnetic susceptibility measurements exhibited the Mn7 has out-of-phase signals, is an single molecule magnet with the effective energy barrier of 12.9 cm-1. The high-field electron paramagnetic resonance (HFEPR) studies indicate the S = 19/2, g = 1.96, D = -0.16 cm-1. The HFEPR confirmed that the Mn7 is a new member of half-integer spin SMM.
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author2 |
Yang, En-Che |
author_facet |
Yang, En-Che Chen, Siou-Yin 陳秀銀 |
author |
Chen, Siou-Yin 陳秀銀 |
spellingShingle |
Chen, Siou-Yin 陳秀銀 Synthesis and Magnetic Properties ofHeptanuclear Manganese Single Molecule Magnets |
author_sort |
Chen, Siou-Yin |
title |
Synthesis and Magnetic Properties ofHeptanuclear Manganese Single Molecule Magnets |
title_short |
Synthesis and Magnetic Properties ofHeptanuclear Manganese Single Molecule Magnets |
title_full |
Synthesis and Magnetic Properties ofHeptanuclear Manganese Single Molecule Magnets |
title_fullStr |
Synthesis and Magnetic Properties ofHeptanuclear Manganese Single Molecule Magnets |
title_full_unstemmed |
Synthesis and Magnetic Properties ofHeptanuclear Manganese Single Molecule Magnets |
title_sort |
synthesis and magnetic properties ofheptanuclear manganese single molecule magnets |
publishDate |
2011 |
url |
http://ndltd.ncl.edu.tw/handle/19398637478760173302 |
work_keys_str_mv |
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