| Synthesis and Structural Characterization of 1,4-Di（2-methoxyphenyl）-2,5-piperazinedione |
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| 引用本文： | 张书圣,温永红,唐小芳,李雪梅.Synthesis and Structural Characterization of 1,4-Di（2-methoxyphenyl）-2,5-piperazinedione[J].中国化学,2007,25(5):714-717. |
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| 作者姓名： | 张书圣 温永红 唐小芳 李雪梅 |
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| 作者单位： | College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China |
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| 基金项目： | Project supported by the Program for New Century Excellent Talents in University （Nos. NCET-04-0649）, the National Natural Science Foundation of China （Nos. 20275020, 20475030） and the 0utstanding Adult-young Scientific Research Encouraging Foundation of Shandong Province, China （No. 2006BS03049）. |
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| 摘 要： | A new derivative of 2,5-piperazinedione, 1,4-di（2-methoxyphenyl）-2,5-piperazinedione （I）, was synthesized by the cyclocondensation reaction of N-2-methoxyphenyl chloroacetamide, and its structure was characterized by elemental analysis, IR, ^1H NMR and single crystal X-ray diffraction method. The crystal belongs to monoclinic system, space group P21/c with unit cell dimensions a=0.56934（10） nm, b=1.3880（2） nm, c=1.00329（17） nm, β= 90.376（3）°, V= 0.7928（2） nm^3, Z=2, Dc = 1.367 g·cm^-3,μ = 0.98 cm^-1, R and wR being 0.0606 and 0.1564 respectively for 1549 unique reflections with 1247 observed reflections I〉2σ（I）]. The molecule has a crystallographically imposed symmetry center. The three rings in the molecule are each coplanar with their attached groups, excluding methyl H atoms and the H atoms attached to the piperazinedione ring, while the whole molecule is not planar, with dihedral angles of 74.7（1）° between the piperazinedione and each of the two aromatic rings. The crystal structure is stabilized by van der Waals and dipole-dipole forces.
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| 关 键 词： | 1 4-二(2-甲氧基苯基)-2 5-哌嗪二酮 合成 晶体结构 特性 |
| 修稿时间： | 2006-08-282006-11-27 |
Synthesis and Structural Characterization of 1,4-Di（2-methoxyphenyl）-2,5-piperazinedione |
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| ZHANG, Shu-Sheng WEN, Yong-Hong TANG, Xiao-Fang LI, Xue-Mei.Synthesis and Structural Characterization of 1,4-Di（2-methoxyphenyl）-2,5-piperazinedione[J].Chinese Journal of Chemistry,2007,25(5):714-717. |
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| Authors: | ZHANG Shu-Sheng WEN Yong-Hong TANG Xiao-Fang LI Xue-Mei |
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| Institution: | College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao,Shandong 266042, China |
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| Abstract: | synthesis, crystal structure, piperazinedione |
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| Keywords: | synthesis crystal structure piperazinedione |
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