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Synthesis, crystal structure and magnetism of a three-dimensional Mn(II) coordination polymers with 2,5-dimethylpyrazine-1,4-dioxide as bridging ligand

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A novel three-dimensional Mn(II) coordination polymer, {[Mn(1,6-dmpzdo)3] · (ClO4)2}n, has been synthesized with 2,5-dimethylpyrazine-1,4-dioxide (dmpzdo) as a bridging ligand and its crystal structure determined by X-ray crystallography. The complex crystallizes in a trigonal system with a space group R-3 and a = 11.6672(14), b = 11.6672(14), c = 16.652(4) Å. In the complex each Mn(II) is coordinated by six 1,6-dmpzdo bridging ligands and each 1,6-dmpzdo bridging ligand coordinates two Mn(II) ions, forming a three-dimensional structure. The variable temperature (4-300 K) magnetic susceptibility data gave the magnetic coupling constant 2J = -0.30 cm-1.
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Keywords: Aromatic N-oxide; Crystal structure; Magnetism; Multi-nuclear complex

Document Type: Research Article

Affiliations: 1: Department of Chemistry, Shandong Normal University, Jinan 250014, P.R. China 2: Department of Chemistry, Nankai University, Tianjin 300071, P.R. China

Publication date: July 1, 2007

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