A unique manganese (II) 2D polymer containing 2, 5-di (2 %26apos;,4 %26apos;-dicarboxylphenyl) pyridine and oxalate mixed ligands: Structure and magnetic property

作者：Feng Xun^*; Liu Jing; Chen Jun Ling; Huo Su Zhen; Wang Li Ya; Ng Seik Weng

来源：Inorganic Chemistry Communications, 2014, 50: 42-47.

DOI：10.1016/j.inoche.2014.10.015

• Oxalate bridging
• Manganese (II) complex
• Tetranuclear cluster
• Anti-ferromagnetic interactions

Solvothermal reaction of conjugated pyridine/benzene dicarboxylic acid ligand with manganese acetate in the presence of ammonium oxalate afforded a novel 20 polymer, {[Mn-4(ddPP)(2) (mu(4)-C2O4)center dot 6H(2)O]center dot 2H(2)O}(n) (ddpp = 2, 5-di(2%26apos;,4%26apos;-dicarboxylphenyl) pyridine) (1). It has been characterized by element analysis, thermogravimetry, infrared spectroscopy and single-crystal X-ray diffraction studies. Polymer 1 is constructed from tetranuclear Mn-II clusters through oxalate bridging, in which four adjacent Mn-II ions are linked into a parallelogram-core aggregate, and the polymer 1 exhibits 1D double-zigzag chains bearing a ladder-like topology feature. The ddpp ligands further interconnect these 1D double chains into 2D corrugated-shape network. Variable temperature magnetic susceptibility measurements indicate that polymer 1 exhibits weak antiferromagnetic interactions.

• 出版日期2014-12
• 单位南阳师范学院; 洛阳师范学院