含异金属环的三维3d-4f聚合物：合成、结构及磁性

Three-dimensional 3d-4f polymers containing heterometallic rings: syntheses, structures, and magnetic properties.

作者信息

Ouyang Yan, Zhang Wei, Xu Na, Xu Gong-Feng, Liao Dai-Zheng, Yoshimura Kazuyoshi, Yan Shi-Ping, Cheng Peng

机构信息

Department of Chemistry, Nankai University, Tianjin 300071, China.

出版信息

Inorg Chem. 2007 Oct 15;46(21):8454-6. doi: 10.1021/ic701097k. Epub 2007 Sep 14.

DOI:10.1021/ic701097k

PMID:17854175

Abstract

Two novel three-dimensional (3D) 3d-4f mixed complexes [Ln(H(2)O)(4)][Ni(2)TTHA(SCN)(2)].H(3)O+ [Ln = Pr (1), Ce (2); H(6)TTHA = triethylenetetraaminehexaacetic acid], based on the building blocks of Ni(2)TTHA(SCN)(2), were synthesized and characterized by X-ray crystal diffraction and magnetic properties. The single-crystal structures show that these complexes form a 3D framework, comprised of an unusual infinite one-dimensional chain based on heterometallic Ln2Ni2 rings. The temperature-dependent magnetic susceptibilities were analyzed by an approximate model, leading to g = 2.06. Delta = 2.83, zJ' = -0.6 cm-1 for complex 1 and g = 2.07, Delta = 1.00, zJ' = -0.5 cm(-1) for complex 2.

摘要

基于[Ni₂TTHA(SCN)₂]⁴⁻构建单元，合成了两种新型三维（3D）3d - 4f混合配合物[Ln(H₂O)₄][Ni₂TTHA(SCN)₂]·H₃O⁺[Ln = Pr（1），Ce（2）；H₆TTHA = 三亚乙基四胺六乙酸]，并通过X射线晶体衍射和磁性对其进行了表征。单晶结构表明，这些配合物形成了一个三维框架，该框架由基于异金属Ln₂Ni₂环的不寻常无限一维链组成。通过近似模型分析了温度依赖性磁化率，得出配合物1的g = 2.06，Δ = 2.83，zJ' = -0.6 cm⁻¹，配合物2的g = 2.07，Δ = 1.00，zJ' = -0.5 cm⁻¹。