رسالة جامعية
Self-assembly of Mn(II), Co(II), Ni(II) and Cu(II)-based coordination polymers from 5,5'-bipyrimidine and azido ligands : structures and magnetism.
| العنوان: | Self-assembly of Mn(II), Co(II), Ni(II) and Cu(II)-based coordination polymers from 5,5'-bipyrimidine and azido ligands : structures and magnetism. |
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| العنوان البديل: | 含5,5'-聯嘧啶與疊氮基之錳、鈷、鎳與銅配位聚合物的自組裝合成、結構與磁性 |
| المؤلفون: | Zu-Zhen Zhang, 張祖禎 |
| مرشدي الرسالة: | Chen-I Yang, 楊振宜 |
| سنة النشر: | 2015 |
| المجموعة: | National Digital Library of Theses and Dissertations in Taiwan |
| الوصف: | 103 This work is report on the self-assemblies of six transition metal coordination polymers using the azido and 5,5’-bipyrimidine ligands. It contains two parts. In the first part, three Co(II)-based 3D frameworks compounds {[Co2(bpm)(N3)4]·MeCN}n (1), [Co(bpm)(N3)2]n (2), and [Co(bpm)(N3)2]n (3) are prepared by self-assembly of N3 and bpm. In the compound 1, μ1,3-azido and μ4-bpm bridges construct Co(II) ions into 3D structure. The 3D framework compound 2 was connected by μ1,3-azido, μ1,1-azido, and μ2-bpm. Compound 3 is bridged by μ4-bpm and terminal N3 ligand. The magnetic data of compounds 1-3 were collected and analysis, which reveal that compounds 1 and 2 exhibit spin-canting antiferromagnetism and magnetic coercivity. While compounds 2and 3 exist metamagnetism in the low temperature. In the second part, three coordination polymers of {[Ni3(bpm)3(N3)6]·2H2O}n (4), [Mn(bpm)(N3)2]n (5), and [Cu2(bpm)(N3)4]n (6) were reported compounds 4 is a Ni(II)-based 2D compound bridged by μ1,1-azido, μ1,3-azido and μ2-bpm ligands. Compounds 5 and 6 adapt the 3D frameworks, where compound 5 contains μ1,3-azido and μ2-bpm ligands and compound 6 contains μ1,1-azido and μ4-bpm ligand. Magnetic analysis reveal there μ1,1-azido dominates the ferromagnetic interaction in compounds 4 and 6, while μ1,3-azido ligands transmits the antiferromagnetic interaction in compounds 4 and 5. |
| Original Identifier: | 103THU00065012 |
| نوع الوثيقة: | 學位論文 ; thesis |
| وصف الملف: | 152 |
| الإتاحة: | http://ndltd.ncl.edu.tw/handle/31920773368767527911Test |
| رقم الانضمام: | edsndl.TW.103THU00065012 |
| قاعدة البيانات: | Networked Digital Library of Theses & Dissertations |
| الوصف غير متاح. |