Citation:
JIA Hong-Yun, GONG Ya-Qiong, ZHANG Shu-Hai. Synthesis, Structure and Magnetic Properties of a 3D Interpentrating Network Based on 4-4-Imidazol-1-yl-benzoic Acid and Azide Ligands[J]. Chinese Journal of Structural Chemistry,
2016, 34(10): 1565-1570.
doi:
10.14102/j.cnki.0254-5861.2011-0668
Synthesis, Structure and Magnetic Properties of a 3D Interpentrating Network Based on 4-4-Imidazol-1-yl-benzoic Acid and Azide Ligands
摘要:
A new CoⅡ coordination complex, namely [Co(iba)(N3)]n, was prepared by the hydrothermal reaction of Co(NO3)2·6H2O with NaN3 in the presence of 4-imidazol-1-yl-benzoic acid (Hiba). Compound 1 crystallizes in orthorhombic, space group Pbca with a=6.782(2), b=19.93(5), c=15.96(4) Å, V=2157.2(3) Å3, Z=8, C10H7O2N5Co, Mr=228.14, Dc=1.774 g/cm3, F(000)=1160, μ(MoKα)=1.592 mm-1. The final R and wR are 0.0706 and 0.1990 for 1160 observed reflections with I>2σ(I). Each iba-coordinates in a bidentate fashion with two CoⅡ ions and every two adjacent CoⅡ ions were connected by one azido ion to form a 3D two-fold interpenetrating framework. Thermogravimeteric analysis (TGA) of compound 1 reveals that the loss of moiety of azido ion occurs from 200 ℃ to about 260 ℃ and the framework begins to decompose above 300 ℃. The magnetic property investigation of compound 1 demonstrates that it displays ferromagnetic coupling between CoⅡ ions.
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关键词:
- solvothermal
- / cobalt
- / crystal structure
- / magnetic properties
English
Synthesis, Structure and Magnetic Properties of a 3D Interpentrating Network Based on 4-4-Imidazol-1-yl-benzoic Acid and Azide Ligands
Abstract:
A new CoⅡ coordination complex, namely [Co(iba)(N3)]n, was prepared by the hydrothermal reaction of Co(NO3)2·6H2O with NaN3 in the presence of 4-imidazol-1-yl-benzoic acid (Hiba). Compound 1 crystallizes in orthorhombic, space group Pbca with a=6.782(2), b=19.93(5), c=15.96(4) Å, V=2157.2(3) Å3, Z=8, C10H7O2N5Co, Mr=228.14, Dc=1.774 g/cm3, F(000)=1160, μ(MoKα)=1.592 mm-1. The final R and wR are 0.0706 and 0.1990 for 1160 observed reflections with I>2σ(I). Each iba-coordinates in a bidentate fashion with two CoⅡ ions and every two adjacent CoⅡ ions were connected by one azido ion to form a 3D two-fold interpenetrating framework. Thermogravimeteric analysis (TGA) of compound 1 reveals that the loss of moiety of azido ion occurs from 200 ℃ to about 260 ℃ and the framework begins to decompose above 300 ℃. The magnetic property investigation of compound 1 demonstrates that it displays ferromagnetic coupling between CoⅡ ions.
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Key words:
- solvothermal
- / cobalt
- / crystal structure
- / magnetic properties
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