Hydrothermal Synthesis, Crystal Structure and Magnetic Property of a New Co(II) Complex: [Co(4,4 '-bpy)(2)(H2O)(2)(4-FBA)(2)]center dot(4,4 '-bpy)

作者：Zhang Bi Song^*; Zheng Miao; Wu Chang Sheng; Li Yun Xia; Qiu Jian Ping; Zheng Yue Qing

来源：Chinese Journal of Structural Chemistry, 2012, 31(4): 577-581.

• syntheses
• magnetic properties
• crystal structure

A new complex [Co(4,4'-bpy)(2)(H2O)(2)(4-FBA)(2)]center dot(4,4'-bpy) (1) has been hydrothermally synthesized using cobalt, 4,4'-bipyridyl (4,4'-bpy) and 4-fluorobenzoic acid (4-HFBA), and characterized by thermal analysis, single-crystal X-ray diffraction and magnetic property. The complex crystallizes in the triclinic system, space group P (1) over bar, Z = 1. Crystal data: C54H44CoF2N8O6, M-r = 997.90, a = 9.134(2), b = 11.555(2), c = 12.867(3) angstrom, alpha = 66.02(3), beta = 77.96(3), gamma = 73.11(3)degrees, V = 1180.9(4) angstrom(3), D-c = 1.403 g/cm(3), mu(MoK alpha) = 0.433 mm(-1), F(000) = 517, the final R = 0.0633 and wR = 0.1171 for 2152 observed reflections (I > 2 sigma(I)). The title complex is assembled into 1D supramolecular chains parallel to [001] based on the adjacent molecular pi center dot center dot pi stacking interactions and hydrogen bonds. The variable temperature magnetic measurements show a weak ferromagnetic behavior over 300-160 K followed by antiferromagnetic behavior below 160 K for the title complex.

• 出版日期2012
• 单位宁波大学