吡啶-2,4-二羧酸肼 | 666707-29-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡啶及其衍生物
• 中文名称: 吡啶-2,4-二羧酸肼
• 英文名称: hydrazinium 2,4-hydrogenpyridinedicarboxylate
• 英文别名: N2H5lut；Monohydrazinium lutidinate；aminoazanium;2-carboxypyridine-4-carboxylate
• CAS: 666707-29-5
• 化学式: C₇H₃NO₄*H*H₅N₂
• 分子量: 199.166
• InChiKey: DQSPJLCADDJZIA-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.7
• 重原子数：
  14
• 可旋转键数：
  2
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.0
• 拓扑面积：
  140
• 氢给体数：
  4
• 氢受体数：
  7

反应信息

• 作为产物：
  描述：

  2,4-吡啶二羧酸 、 一水合肼 以 水 为溶剂， 生成 吡啶-2,4-二羧酸肼
  参考文献：
  名称：

  摘要：

  Hydrazinium 2,n-pyridinedicarboxylates of general compositions N(2)H(5)HA, (N2H5)(2)A.H2O and N(2)H(5)HA.H(2)A, where H(2)A=2,n-pyridinedicarboxylic acid (n=3, quinolinic acid; n=4, lutidinic acid; n=5, isocinchomeronic acid and n=6, dipicolinic acid) have been prepared by the neutralisation of aqueous solution of hydrazine hydrate with the respective acids, in stoichiometric ratios. Formation of these hydrazinium derivatives has been confirmed by analytical, IR spectral and thermal studies. Among these, the monohydrazinium salts are anhydrous whereas the dihydrazinium salts are monohydrated. While lutidinic and dipicolinic acids form all the three types of salts, the quinolinic and isocinchomeronic acids do not form N(2)H(5)HA.H(2)A and N(2)H(5)HA, respectively, except the other two types. Infrared spectra of these salts reveal N-N stretching frequencies of the hydrazinium ion in the region 970-950 cm(-1). The simultaneous TG and DTA of these salts show that all of them decompose without clear melting and lose hydrazine endothermically between 200 and 280degreesC, except dihydrazinium isocinchomeronate monohydrate in which half of the hydrazine molecule is lost exothermically, to give pyridinemono- or dicarboxylic acid intermediate which further decomposes exothermically to gaseous products.

  DOI：

  10.1023/a:1025867505677

文献信息

• ——
  作者：K. Saravanan、S. Govindarajan

  DOI：10.1023/a:1025867505677

  日期：——

  Hydrazinium 2,n-pyridinedicarboxylates of general compositions N(2)H(5)HA, (N2H5)(2)A.H2O and N(2)H(5)HA.H(2)A, where H(2)A=2,n-pyridinedicarboxylic acid (n=3, quinolinic acid; n=4, lutidinic acid; n=5, isocinchomeronic acid and n=6, dipicolinic acid) have been prepared by the neutralisation of aqueous solution of hydrazine hydrate with the respective acids, in stoichiometric ratios. Formation of these hydrazinium derivatives has been confirmed by analytical, IR spectral and thermal studies. Among these, the monohydrazinium salts are anhydrous whereas the dihydrazinium salts are monohydrated. While lutidinic and dipicolinic acids form all the three types of salts, the quinolinic and isocinchomeronic acids do not form N(2)H(5)HA.H(2)A and N(2)H(5)HA, respectively, except the other two types. Infrared spectra of these salts reveal N-N stretching frequencies of the hydrazinium ion in the region 970-950 cm(-1). The simultaneous TG and DTA of these salts show that all of them decompose without clear melting and lose hydrazine endothermically between 200 and 280degreesC, except dihydrazinium isocinchomeronate monohydrate in which half of the hydrazine molecule is lost exothermically, to give pyridinemono- or dicarboxylic acid intermediate which further decomposes exothermically to gaseous products.