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人工晶体学报 ›› 2017, Vol. 46 ›› Issue (7): 1348-1354.

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羧酸根桥连稀土一维链配合物的制备及磁性能研究

杨燕;雷全;苏港平;龚俐;王博;佘世雄   

  1. 青海大学化工学院,西宁,810016
  • 出版日期:2017-07-15 发布日期:2021-01-20
  • 基金资助:
    国家自然科学基金(21461021);青海省自然科学基金青年基金(2014-ZJ-940Q);教育部"春晖计划"(Z2014008)

Synthesis and Magnetic Properties of Two One-dimensional Lanthanide Complexes Bridged by Carboxylate Ions

YANG Yan;LEI Quan;SU Gang-ping;GONG Li;WANG Bo;SHE Shi-xiong   

  • Online:2017-07-15 Published:2021-01-20

摘要: 以4-氨基苯甲酸(HPAA)和Ln(NO3)3·6H2O(Ln=Tb, Ho)为原料,经溶剂热反应合成了两个新型的配合物[Ln2(PAA)6]n (Ln=Tb(1),Ho(2)).并利用X-射线单晶衍射、红外光谱(FT-IR)、热重分析(TG-DTA)和SQUID磁性测量仪等实验手段对配合物进行了表征.结果表明,配合物1-2为完全同构化合物,由羧酸根桥连Ln2(PAA)6单元形成一维链结构.磁性研究表明配合物1表现出慢磁驰豫行为.

关键词: 羧酸根桥连;稀土;一维链;晶体结构;磁性

Abstract: Two new carboxylate-bridged 1D chain complexes, e.g.[Ln2(PAA)6]n ((PAA-=4-aminobenzoic acid anion, Ln=Tb(1),Ho(2)), have been synthesized under solvothermal conditions and characterized by single crystal X-ray crystallography analysis, FT-IR,TG-DTA and elemental analysis.Results show that both complexes are isostructural 1D chains and bridged by carboxylate groups.Magnetic susceptibility of polycrystalline samples of complex 1 were carried out ousing a SQUID magnetometer.The magnetic studies indicate that complex 1 exhibits slow magnetic relaxation behavior.

Key words: Two new carboxylate-bridged 1D chain complexes, e.g.[Ln2(PAA)6]n ((PAA-=4-aminobenzoic acid anion, Ln=Tb(1),Ho(2)), have been synthesized under solvothermal conditions and characterized by single crystal X-ray crystallography analysis, FT-IR,TG-DTA and elemental analysis.Results show that both complexes are isostructural 1D chains and bridged by carboxylate groups.Magnetic susceptibility of polycrystalline samples of complex 1 were carried out ousing a SQUID magnetometer.The magnetic studies indicate that complex 1 exhibits slow magnetic relaxation behavior.

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