Ln(Ⅲ)-Ni(Ⅱ)与双水杨醛缩乙二胺席夫碱异核配合物的合成与波谱

波谱学杂志 ›› 1998, Vol. 15 ›› Issue (4): 327-332.

Ln(Ⅲ)-Ni(Ⅱ)与双水杨醛缩乙二胺席夫碱异核配合物的合成与波谱

鲁桂¹, 姚克敏¹, 陈德余¹, 沈联芳², 袁汉珍²

1. 浙江大学化学系, 杭州 310027;
2. 中国科学院武汉物理与数学研究所波谱与原子分子物理国家重点实验室, 武汉 430071

收稿日期:1998-02-09 修回日期:1998-04-21 出版日期:1998-08-05 发布日期:2018-01-13
作者简介:鲁桂,女,26岁,硕士,讲师
基金资助:
国家自然科学基金(29671026),浙江省自然科学基金(296062),波谱与原子分子物理国家重点实验室基金(971502)

SYNTHESIS AND MAGNETIC RESONANCE SPECTRA OF HETERONUCLEAR Ln(Ⅲ) Ni(Ⅱ) COMPLEXES WITH BIS SALICYLALDEHYDE ETHYLENEDIAMINE SCHIFF BASE

Lu Gui¹, Yao Kemin¹, Chen Deyu¹, Shen Lianfang², Yuan Hanzhen²

1. Department of Chemistry, Zhejiang University, Hangzhou, 310027;
2. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Phys. & Math., The Chinese Academy of Sciences, Wuhan, 430071

Received:1998-02-09 Revised:1998-04-21 Online:1998-08-05 Published:2018-01-13

摘要/Abstract

摘要： 合成了双水杨醛缩乙二胺席夫碱(SALEN)与镍的配合物Ni₃(SALEN)₂(NO₃)₆·H₂O及镧系镍的异核配合物Ln₂Ni₃(SALEN)₆(NO₃)₁₂·H₂O(Ln=La,Nd,Sm,Gd,Yb,Y).以紫外、红外光谱、磁化率,特别是¹H NMR及EPR波谱等方法研究了它们在组成、结构和配位等方面的异同.Gd-Ni-SALEN配合物的EPR谱表明其在低温THF中呈"单峰效应".文中讨论了配合物在不同溶剂中峰宽的相对关系、配合物晶体场强度及Gd³⁺周围局部对称性问题.

关键词: 镧系异核配合物, 席夫碱, EPR波谱

Abstract: A series of heteronuclear complexes of Ln(Ⅲ-)-Ni(Ⅱ) and Ni(Ⅱ) complexes with bissalicylaldehyde ethylenediamine (SALEN) have been synthesized. They are formulated as Ln₂Ni₃(SALEN)₆(NO₃)₁₂·H₂O(Ln=La,Nd,Sm,Gd,Yb,Y) and Ni₃(SALEN)₂(NO₃)₆·H₂O, respectively. The differences in their compositions, structures and coordinations have been investigated by UV, IR, magnetic susceptibility, especially by ¹H NMR and EPR spectrascopy. The EPR spectra of the Gd-Ni-SALEN complex in powder and various solvents were investigated at different temperatures. "Single Peak Effect" was observed in THF solvent at low temperature. The "U" spectral feature, crystal-field strength and local symmetry around Gd³⁺ were discussed.

Key words: Heteronuclear lanthanide complexes, Schiff base, EPR spectra

鲁桂, 姚克敏, 陈德余, 沈联芳, 袁汉珍. Ln(Ⅲ)-Ni(Ⅱ)与双水杨醛缩乙二胺席夫碱异核配合物的合成与波谱[J]. 波谱学杂志, 1998, 15(4): 327-332.

Lu Gui, Yao Kemin, Chen Deyu, Shen Lianfang, Yuan Hanzhen. SYNTHESIS AND MAGNETIC RESONANCE SPECTRA OF HETERONUCLEAR Ln(Ⅲ) Ni(Ⅱ) COMPLEXES WITH BIS SALICYLALDEHYDE ETHYLENEDIAMINE SCHIFF BASE[J]. Chinese Journal of Magnetic Resonance, 1998, 15(4): 327-332.

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