碘与碱1-氮杂-15-冠-5和3,6,9,14-四硫杂双环[9.2.1]十四碳-11,13-二烯配合物的光谱研究
Spectroscopic studies of complexes of iodine with the bases 1-aza-15-crown-5 and 3,6,9,14-tetrathiabicyclo[9.2.1]tetradeca-11,13-diene.
作者信息
Hassan Kh A
机构信息
Department of Chemistry, Faculty of Science, Qatar University, Doha 2713.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2004 Nov;60(13):3059-63. doi: 10.1016/j.saa.2004.01.027.
The interactions of iodine with each of the electron donors 1-aza-15-crown-5 (AC) and 3,6,9,14-tetrathiabicyclo[9.2.1]tetradeca-11,13-diene (TTBCTD) in CHCl3 have been described in terms of 1:1 and 1:2, base: I2 complexes, respectively, forming the complexes of the type [(AC)2I]+.I3- and [(TTBCTD)(I2)2]. The [(AC)2I]+.I3- shows the characteristic absorptions of I3- ion at 265 and 365 nm while the charge-transfer transition of [(TTBCTD)(I2)2] occurs at 320 nm. The formation of the two complexes was further confirmed by far infrared measurements. The values of the complex formation constant, K, and the absorpativity, in CHCl3 are calculated for the complex [(AC)2I]+.I3-.
碘与电子给体1-氮杂-15-冠-5（AC）和3,6,9,14-四硫杂双环[9.2.1]十四碳-11,13-二烯（TTBCTD）在氯仿中的相互作用，已分别按照1:1和1:2（碱:I₂）配合物进行了描述，形成了[(AC)₂I]⁺·I₃⁻和[(TTBCTD)(I₂)₂]类型的配合物。[(AC)₂I]⁺·I₃⁻在265和365 nm处显示出I₃⁻离子的特征吸收，而[(TTBCTD)(I₂)₂]的电荷转移跃迁发生在320 nm处。通过远红外测量进一步证实了这两种配合物的形成。计算了氯仿中配合物[(AC)₂I]⁺·I₃⁻的配合物形成常数K和吸光率的值。
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