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碲醇

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碲醇的结构
碲醇的结构

碲醇(英语:tellurol)是指含有碲醇基(形如-TeH的官能团)的有机化合物

性质

碲醇是醇和酚的类似物,其中被替换成了[1]。碲醇和硒醇硫醇具有类似的性质,其中碲醇是最稳定的[2]

结构和成键

碲醇与硒醇结构相似,但C-Te键长比C-Se的键长稍长一些。C-Te-H的键角为90°,比C-Se-H略小。

物理性质

碳数少的碲醇多为黄色的液体,并具有强烈刺激的气味,而碳数较多的碲醇多为无色结晶。碲醇是有机碲化合物较稳定的一种。

酸碱性

碲醇的酸碱性可以从碲化氢酸度离解常数来推断,碲化氢(H2Te)的pKa是2.64对应的解离常数为2.3×10-3.5。所以碲化氢的pKa比硒化氢硫化氢低且碲化氢的解离常数比硒化氢硫化氢还要高[3]

命名

碲醇的官能基的命名为氢碲基,但也有人称作缺字图片[来源请求],类似于巯基羟基缺字图片基,是将元素的偏旁组合起来,缺字图片读作ㄑㄧˋ(氢碲)[来源请求]

例子

参见

  • 碲酚,酚的含碲类似物
  • 碲醚,碲醇的烃化产物
  • -硫醇-硒醇-碲醇

参考文献

  1. ^ Igor D Sadekov and A V Zakharov 1999 "Stable tellurols and their metal derivatives" Russ. Chem. Rev. 1999, vol. 68, 909.
  2. ^ Brahim Khater, Jean-Claude Guillemin, Gábor Bajor, Tamás Veszprémi "Functionalized Tellurols: Synthesis, Spectroscopic Characterization by Photoelectron Spectroscopy, and Quantum Chemical Study" Inorganic Chemistry 2008 volume 47, p. 1502-1511. doi:10.1021/ic701791h
  3. ^ Patai, Saul, and Zvi Rappoport. The Chemistry of Organic Selenium and Tellurium Compounds. Vol. 1. Chichester England: Wiley, 1986.
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碲醇
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