1. New 3D Coordination Polymers Constructed from Pillared Metal–Formate Kagomé Layers Exhibiting Spin Canting Only in the Nickel(lI) Complex.
- Author
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Zuo-Xi Li, Jiong-Peng Zhao, Saitudo, E. C., Hong Ma, Zhong-Da Pan, Yong-Fel Zeng, and Xian-He Bu
- Subjects
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POLYMERS , *NICKEL , *LIGANDS (Chemistry) , *METAL complexes , *MAGNETIC measurements , *ANTIFERROMAGNETISM , *MAGNETIC coupling - Abstract
Sparked by the strategy of pillared-layer MOFs, three formate moidinabon polymers, ([Ni2(HCO2)3(L)2](N03) . 2H2O). (1), ([Co2(HCO2)3(L)2](HCO2).2H2O).. (2), and ([Cu2(HCO2)3(L)2](HCO2)-2H2O)̱ (3), have been synthesized by employing the rodlike ligand 4,4'-bis(imidazol-l.yl)biphenyl (L) as the pillar. Structural analysis indicates that the title complexes 1–3 are isostructural compounds, which possess metal-formale 2D layers perpendicularty pillared by the ligand L to afford a 3D open framework. This is an interesfng example of a Kagomh lattice based on the formate mediator. Moreover, the formate anion of this 20 Kagomé layer exhibits various bridging modes: anit-anti, syn-anit, and 3.21 modes. Their magnetic measurements reveals that only complex 1 presents the spin canting phenomenon, while its isostructural Coll and Cull complexes are simply paramagnels with antiferromagnetic coupling. [ABSTRACT FROM AUTHOR]
- Published
- 2009
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