Auxiliary ligand-triggered assembly of two dinuclear Cu(II) compounds with a pyridylhydrazone derivative: Synthesis, crystal structure and magnetic property

作者：Liu, Xiangyu^*; Liu, Huaixian; Cen, Peipei; Chen, Xiaoyan; Zhou, Huiliang; Song, Weiming; Hu, Qilin

来源：Inorganica Chimica Acta, 2016, 447: 12-17.

DOI：10.1016/j.ica.2016.03.031

• Copper(II) dimer
• Pyridylhydrazone ligand
• Benzendicarboxylic acid
• Crystal structure
• Magnetic property

Employing different benzendicarboxylic acids as co-ligands, two new compounds, [Cu-2(bpad)(2)(Hp)(2)](n) (1) and [Cu-2(bpad)(2)(Hip)(2)](n) (2) (Hbpad = N-3-benzoylpyridine-2-carboxamidrazone, H(2)p = phthalic acid, H(2)ip = isophthalic acid), have been synthesized. The structures and magnetic properties of title compounds have been systematically characterized. The two dinuclear Cu(II) compounds are isomers in which the metal ions adopt distinguishably penta-coordinated geometries. Cu(II) ions with square pyramidal structure are bridged by carboxylate oxygen atoms in 1, while the Cu(II) centers with trigonal bipyramid model are linked by carbamoyl oxygen atoms in 2. Magnetic measurements illustrate that the short contacts causing antiferromagnetic intra-dimer interactions consist in compound 1, whereas ferromagnetic intra-dimer interactions are performed on compound 2.

• 出版日期2016-6-1
• 单位宁夏大学