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Solvothermal Syntheses and Structural Characterisation of Three Isostructural 3D Metal‐Malate Coordination Polymers: {[M(C 4 H 4 O 5 )(H 2 O)]·H 2 O} n (M = Co II , Ni II , Co II /Ni II )
Author(s) -
Xie FengTong,
Duan LiMei,
Xu JiQing,
Ye Ling,
Liu YaBing,
Hu XiXue,
Song JiangFeng
Publication year - 2004
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.200400556
Subject(s) - isostructural , chemistry , ferrimagnetism , antiferromagnetism , carboxylate , crystallography , ligand (biochemistry) , magnetic susceptibility , metal organic framework , ferromagnetism , metal , solvothermal synthesis , inorganic chemistry , stereochemistry , crystal structure , magnetization , organic chemistry , biochemistry , physics , receptor , adsorption , quantum mechanics , magnetic field , condensed matter physics
Three isostructural coordination polymers with the general formula {[M(C 4 H 4 O 5 )(H 2 O)]·H 2 O} n [M = Co II ( 1 ), Ni II ( 2 ) and 1/3Co II + 2/3Ni II ( 3 ), C 4 H 4 O 5 = Hmal 2− , 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 M II 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 M II ions mediated by the skew ‐ skew carboxylate bridges. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)