dibromobis(2,5-dimethylpyrazine)zinc(II) | 149938-11-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 咪唑并[1,5-a]吡嗪
• 英文名称: dibromobis(2,5-dimethylpyrazine)zinc(II)
• CAS: 149938-11-4
• 化学式: C₁₂H₁₆Br₂N₄Zn
• 分子量: 441.484
• InChiKey: JBFHDSAFLMEGON-UHFFFAOYSA-L

计算性质

• 辛醇/水分配系数(LogP)：
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• 重原子数：
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• 可旋转键数：
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• 环数：
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• sp3杂化的碳原子比例：
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• 拓扑面积：
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• 氢给体数：
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• 氢受体数：
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反应信息

• 作为产物：
  描述：

  2,5-二甲基吡嗪 、 zinc dibromide 以 乙醇 为溶剂， 以27%的产率得到dibromobis(2,5-dimethylpyrazine)zinc(II)
  参考文献：
  名称：

  Synthesis, structure and magnetic studies of copper(II) and copper(I) complexes of methylpyrazines

  摘要：

  Reaction of Cu(ClO4) 2 with 2-methylpyrazine (mepz), 2,5-dimethylpyrazine (2,5-dmpz) or 2,6-dimethylpyrazine (2,6-dmpz) in aqueous solution yields the corresponding CuLn(ClO4)2(H2O). (n = 2,4; m = 1,2,4). Single-crystal X-ray diffraction of Cu(mepZ)2(ClO4)2(H2O)2 (1) reveals a roughly octahedral geometry with all ligands trans. Similarly, Cu(mepz)4(ClO4)2(H2O) (2) is pseudo-octahedral with one coordinated perchlorate and one H2O in the axial sites. The pyrazines are coordinated through the N(4) nitrogen atom in both 1 and 2. The magnetic susceptibilities of these compounds have been measured in the range 2-300 K. All the compounds behave as paramagnets. Conversely, reaction of Cu(ClO4)2 With 2,3-dimethylpyrazine in aqueous solution, or with mepz, 2,3-dmpz or 2,5-dmpz and NaBH4 or NaSCN in aqueous solution yields complexes of the type Cu2(L)3(ClO4)2 or Cu2(L)(SCN)2, respectively. IR analysis suggests that the complexes are polymeric lattices of tri-coordinate copper(I) atoms bridged by the pyrazine ligands or the pyrazine and thiocyanate ligands, similar to the known structure of Cu2(2,3-dimethyl-pyrazine)3(ClO4)2.

  DOI：

  10.1016/s0277-5387(00)87178-8