应用化学 ›› 2016, Vol. 33 ›› Issue (12): 1435-1440.DOI: 10.11944/j.issn.1000-0518.2016.12.160073

• 研究论文 • 上一篇    下一篇

喹喔啉氮氧自由基-Zn(Ⅱ)配合物的合成、结构和磁性质

张有娟a,杨金慧ab,陈静ab*()   

  1. a安阳师范学院化学化工学院 河南 安阳 455000
    b郑州大学化学与分子工程学院 郑州 450000
  • 收稿日期:2016-02-25 接受日期:2016-06-14 出版日期:2016-12-05 发布日期:2016-12-05
  • 通讯作者: 陈静
  • 基金资助:
    国家自然科学基金资助项目(21071006)

Synthesis, Crystal Structure and Magnetic Properties of a Zinc(Ⅱ) Complex with Quinoxaline-substituted Nitronyl Nitroxide Radicals

ZHANG Youjuana,YANG Jinhuiab,CHEN Jingab*()   

  1. aCollege of Chemistry and Chemical Engineering,Anyang Normal University,Anyang,Henan 455002,China
    bSchool of Chemical Engineering and Energy,Zhengzhou University,Zhengzhou 450052,China
  • Received:2016-02-25 Accepted:2016-06-14 Published:2016-12-05 Online:2016-12-05
  • Contact: CHEN Jing
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21071006)

摘要:

采用喹喔啉基取代的氮氧自由基NITQ与锌(Ⅱ)离子进行配位,得到了1个单核的双自旋配合物[Zn(acac)2(NITQ)2]·2CH2Cl2(其中acac=乙酰丙酮阴离子,NITQ=2-(2'-喹喔啉基)-4,4,5,5-四甲基咪唑啉-3-氧化-1-氧基自由基)。 X射线单晶衍射分析结果表明,两个NITQ自由基作为单齿配体分别与Zn(acac)2配位,形成八面体构型的双自旋配合物。 变温磁化率研究表明,NITQ自由基间存在铁磁相互作用,其居里常数C=0.7242 cm3·K/mol,外斯常数θ=0.5958 K。

关键词: 氮氧自由基, Zn(Ⅱ), 单晶结构, 磁性

Abstract:

A two-spin complex{[Zn(acac)2](NITQ)2}·2CH2Cl2(acac=acetylaceonate anion, NITQ=2-(2-quinoxalinyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide) was synthesized from a quinoxalinyl substituted nitroxide radical. The X-ray analysis of the single crystal reveals that two NITQ radicals act as monodentate ligands coordinated to Zn2+ to form a two-spin octahedral complex. The magnetic study shows that two NITQ radicals have ferromagnetic interaction, the Curie constant C=0.7242 cm3·K/mol and Weiss constant θ=0.5958 K.

Key words: nitronyl nitroxide, Zn(Ⅱ), crystal structure, magnetic properties