Magnetic Studies of Twisting Geometry in Trinuclear Manganese Clusters
碩士 === 國立成功大學 === 化學系碩博士班 === 97 === This work contains three parts. The first part, the complexes [Mn3O(R-salox)3(L)3(ClO4)](R = H, L = 2,4’-bipy (1) ; R = Me, L = 2,4’-bipy (2) ; R = Et, L = 2,4’-bipy (3) ; R = Me, L = phpy (4) ; R = Et, L = phpy (5) ; R = Ph, L = phpy (6)) are synthesized from th...
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ndltd-TW-097NCKU50650122016-05-04T04:17:07Z http://ndltd.ncl.edu.tw/handle/82448806873024099082 Magnetic Studies of Twisting Geometry in Trinuclear Manganese Clusters 三核錳的幾何扭曲對磁性之研究 Kai-Hung Cheng 鄭凱鴻 碩士 國立成功大學 化學系碩博士班 97 This work contains three parts. The first part, the complexes [Mn3O(R-salox)3(L)3(ClO4)](R = H, L = 2,4’-bipy (1) ; R = Me, L = 2,4’-bipy (2) ; R = Et, L = 2,4’-bipy (3) ; R = Me, L = phpy (4) ; R = Et, L = phpy (5) ; R = Ph, L = phpy (6)) are synthesized from the reactions of H2salox and its derivatives with MnⅡ ions. The structures of these complexes are determined by X-ray crystallography. Direct current (DC) and alternating current (AC) magnetic studies indicate the complexes 2, 3, 4, 5 and 6 are single-molecule magnets (SMM) with an S = 6 ground spin state, in contrast complex 1 has the ground spin state S = 0. The second part, the reaction of H2salox and its derivatives with MnⅡ ions in MeOH yields the trinuclear complexes of [Mn3O(R-salox)3(MeOH)3(ClO4)] (R = Me (7) ; R = Et (8) ; R = Ph (9)). The structures of these complexes are determined by X-ray crystallography. DC and AC magnetic studies evidence that complexes 7, 8 and 9 are single-molecule magnets (SMM) with an S = 6 ground spin state. The third part, treatment of bipyridine-containing linkers (dpe, azpy or bpe) with MnⅡ ions produce two-dimensional coordination polymers, [Mn3O(salox)3(L)1.5(ClO4)] (L = dpe (10) ; L = azpy (11) ; L = bpe (12)). The structures of these complexes are determined by X-ray crystallography. The DC magnetic studies indicate that they have an S = 0 ground spin state. Hui-Lien Tsai 蔡惠蓮 2009 學位論文 ; thesis 278 zh-TW |
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碩士 === 國立成功大學 === 化學系碩博士班 === 97 === This work contains three parts. The first part, the complexes [Mn3O(R-salox)3(L)3(ClO4)](R = H, L = 2,4’-bipy (1) ; R = Me, L = 2,4’-bipy (2) ; R = Et, L = 2,4’-bipy (3) ; R = Me, L = phpy (4) ; R = Et, L = phpy (5) ; R = Ph, L = phpy (6)) are synthesized from the reactions of H2salox and its derivatives with MnⅡ ions. The structures of these complexes are determined by X-ray crystallography. Direct current (DC) and alternating current (AC) magnetic studies indicate the complexes 2, 3, 4, 5 and 6 are single-molecule magnets (SMM) with an S = 6 ground spin state, in contrast complex 1 has the ground spin state S = 0. The second part, the reaction of H2salox and its derivatives with MnⅡ ions in MeOH yields the trinuclear complexes of [Mn3O(R-salox)3(MeOH)3(ClO4)] (R = Me (7) ; R = Et (8) ; R = Ph (9)). The structures of these complexes are determined by X-ray crystallography. DC and AC magnetic studies evidence that complexes 7, 8 and 9 are single-molecule magnets (SMM) with an S = 6 ground spin state. The third part, treatment of bipyridine-containing linkers (dpe, azpy or bpe) with MnⅡ ions produce two-dimensional coordination polymers, [Mn3O(salox)3(L)1.5(ClO4)] (L = dpe (10) ; L = azpy (11) ; L = bpe (12)). The structures of these complexes are determined by X-ray crystallography. The DC magnetic studies indicate that they have an S = 0 ground spin state.
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author2 |
Hui-Lien Tsai |
author_facet |
Hui-Lien Tsai Kai-Hung Cheng 鄭凱鴻 |
author |
Kai-Hung Cheng 鄭凱鴻 |
spellingShingle |
Kai-Hung Cheng 鄭凱鴻 Magnetic Studies of Twisting Geometry in Trinuclear Manganese Clusters |
author_sort |
Kai-Hung Cheng |
title |
Magnetic Studies of Twisting Geometry in Trinuclear Manganese Clusters |
title_short |
Magnetic Studies of Twisting Geometry in Trinuclear Manganese Clusters |
title_full |
Magnetic Studies of Twisting Geometry in Trinuclear Manganese Clusters |
title_fullStr |
Magnetic Studies of Twisting Geometry in Trinuclear Manganese Clusters |
title_full_unstemmed |
Magnetic Studies of Twisting Geometry in Trinuclear Manganese Clusters |
title_sort |
magnetic studies of twisting geometry in trinuclear manganese clusters |
publishDate |
2009 |
url |
http://ndltd.ncl.edu.tw/handle/82448806873024099082 |
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