引用本文:
高媛媛, 王超, 王亚丽, 马越, 王庆伦, 廖代正. 四自旋氮氧自由基-锰(Ⅱ)配合物的合成、结构和磁性质[J]. 应用化学,
2012, 29(12): 1447-1451.
doi:
10.3724/SP.J.1095.2012.20418
Citation: GAO Yuanyuan, WANG Chao, WANG Yali, MA Yue, WANG Qinglun, LIAO Daizheng. Synthesis, Crystal Structure and Magnetic Properties of a Four-spin Nitroxide Radical-Mn(Ⅱ) Complex[J]. Chinese Journal of Applied Chemistry, 2012, 29(12): 1447-1451. doi: 10.3724/SP.J.1095.2012.20418
Citation: GAO Yuanyuan, WANG Chao, WANG Yali, MA Yue, WANG Qinglun, LIAO Daizheng. Synthesis, Crystal Structure and Magnetic Properties of a Four-spin Nitroxide Radical-Mn(Ⅱ) Complex[J]. Chinese Journal of Applied Chemistry, 2012, 29(12): 1447-1451. doi: 10.3724/SP.J.1095.2012.20418
四自旋氮氧自由基-锰(Ⅱ)配合物的合成、结构和磁性质
摘要:
采用吡啶基取代的氮氧自由基4P4NIT与过渡金属锰(Ⅱ)离子进行配位,得到了1个双核的四自旋配合物{[Mn(hfac)2]2(4P4NIT)2}·CHCl3(其中,4P4NIT=2-(4'-(4"-吡啶基)苯基)-4,4,5,5-四甲基咪唑啉-3-氧化-1-氧基自由基,hfac=1,1,1,5,5,5-六氟乙酰丙酮阴离子)。X射线单晶衍射分析表明,2个4P4NIT自由基作为桥联配体,连接了2个Mn(hfac)2单元,形成双核四自旋配合物。变温磁化率研究表明,配合物中过渡金属Mn(Ⅱ)离子和直接配位的氮氧自由基之间存在着强反铁磁相互作用。
English
Synthesis, Crystal Structure and Magnetic Properties of a Four-spin Nitroxide Radical-Mn(Ⅱ) Complex
Abstract:
A four-spin complex {[Mn(hfac)2]2(4P4NIT)2}·CHCl3(4P4NIT=2-(4'-(4"-pyridyl)phenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide,hfac=1,1,1,5,5,5-hexafluoro-acetylaceonate anion) was synthesized using a pyridyl substituted nitroxide radical.The single crystal X-ray analysis reveals that two 4P4NIT radicals act as bridging ligand linking two Mn(hfac)2 units together.The magnetic study shows that there exists strong magnetic interaction between Mn(Ⅱ) ions and directly bonded radicals.
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Key words:
- nitronyl nitroxide radical
- / Mn(Ⅱ)
- / crystal structure
- / magnetic properties
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