A 3D complex containing novel 2D Cu-II-azido layers: Structure, magnetic properties and effects of "Non-innocent" reagent

作者：Gao Xue Miao; Guo Qian; Zhao Jiong Peng^*; Liu Fu Chen

来源：Journal of Solid State Chemistry, 2012, 196: 145-149.

DOI：10.1016/j.jssc.2012.06.008

• Metal-azido
• Pyrazine-2-carboxylic
• Cu-II-azido layer
• Magnetic properties
• Topology

A novel copper-azido coordination polymer, [Cu-2(N-3)(3)(L)](n) (1, HL=pyrazine-2-carboxylic acid), has been synthesized by hydrothermal reaction with "Non-innocent" reagent in the aqueous solution. In the reaction system. Cu-II ions are avoided to reduce to Cu-I ions due to the existence of Nd-III. It is found that the complex is a 3D structure based on two double EO azido bridged trimmers and octahedron Cu-II ions, in which the azide ligands take on EO and mu(1.1,3) mode to form Cu-II-azido 2D layers, furthermore L ligands pillar 2D layers into an infinite 3D framework with the Schlafli symbol of {4;6(2)) 4{4(2); 6(12); 8(10); 10(4)}{4(2);6(4)}. Magnetic studies revealed that the interactions between the Cu-II ions in the trimmer are ferromagnetic for the Cu-N-Cu angle nearly 98 degrees, while the interactions between the trimmer and octahedron Cu-II ion are antiferromgantic and result in an antiferromagnetic state.

• 出版日期2012-12
• 单位天津理工大学; 兰州石化职业技术学院