Solvothermal Syntheses and Structural Characterisation of Three Isostructural 3D Metal-Malate Coordination Polymers: {[M(C4H4O5)(H2O)]·H2O}n (M = CoII, NiII, CoII/NiII)

Three isostructural coordination polymers with the general formula {[M(C4H4O5)(H2O)]·H2O}n [M = CoII (1), NiII (2) and 1/3CoII + 2/3NiII (3), C4H4O5 = Hmal2−, malate dianion] have been designed and synthesised via solvothermal routes. In these compounds, the malate acts as the unique quinque‐dentate...

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Bibliographic Details
Published in:European journal of inorganic chemistry 2004-11, Vol.2004 (22), p.4375-4379
Main Authors: Xie, Feng-Tong, Duan, Li-Mei, Xu, Ji-Qing, Ye, Ling, Liu, Ya-Bing, Hu, Xi-Xue, Song, Jiang-Feng
Format: Article
Language:English
Subjects:
Coordination polymer
Malate bridges
Quinque-dentate ligand
Solvothermal synthesis
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Summary:Three isostructural coordination polymers with the general formula {[M(C4H4O5)(H2O)]·H2O}n [M = CoII (1), NiII (2) and 1/3CoII + 2/3NiII (3), C4H4O5 = Hmal2−, malate dianion] have been designed and synthesised via solvothermal routes. In these compounds, the malate acts as the unique quinque‐dentate ligand with all five oxygen atoms participating in the coordination. The MII ions are interconnected via α‐ and β‐carboxyl groups from the malate ligands to generate zigzag chains and planes which are further linked together by the β‐carboxyl groups leading to the 3D open frameworks. Variable temperature magnetic susceptibility measurements indicate the occurrence of antiferromagnetic (1), ferromagnetic (2) and ferrimagnetic (3) interactions between the MII ions mediated by the skew‐skew carboxylate bridges. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)
ISSN:1434-1948
1099-0682
DOI:10.1002/ejic.200400556