A novel cobalt(II) acylpyrazolonate complex with intermolecular hydrogen bond: Synthesis, structure and properties

作者：Li Jia Min; Li Jin Zhou^*; Zhang Heng Qiang; Xu Li Ying

来源：Inorganic Chemistry Communications, 2010, 13(5): 573-576.

DOI：10.1016/j.inoche.2010.01.023

• Acylpyrazolonate complex
• Cobalt
• Crystal structure
• Fluorescence
• Spectrum characterization

A new cobalt complex, [Co(L)(2).(H(2)O)(2)](HL = 4-hexanoy1-3-methyl-1-pheny1-1H -pyrazol-5(4H)-one), was synthesized by us. The complex was characterized by single crystal X-ray diffraction, IR, UV, fluorescence spectra and thermogravimetric analysis. The results of characterization showed that the crystal is monoclinic system with crystal parameters: a = 15.2439(12)angstrom, b = 7.4101(6)angstrom, c = 15.7381(18)angstrom, and Z = 2, S = 1.074. It was found that the Co(2+) is located in the inversion center of the complex. The Co(11) had an ideal octahedral coordination environment with four oxygen atoms of HL ligands in the equatorial plane and two water molecules in axial positions. The complex exhibits yellow emission as the result of the fluorescence from the intraligand emission excited state.

• 出版日期2010-5
• 单位哈尔滨学院; 哈尔滨师范大学