Construction of Novel Cyclic Tetrads by Axial Coordination of Thiaporphyrins to Tin(IV) Porphyrin

A. Alka, Yogita Pareek, Vijayendra S. Shetti, M. Rajeswara Rao, Gregory G. Theophall, Way Zen Lee, K. V. Lakshmi, M. Ravikanth

研究成果: 雜誌貢獻文章

1 引文 斯高帕斯(Scopus)

摘要

We report the formation of new cyclic porphyrin tetrads 1 and 2, which were obtained from the reaction between dihydroxytin(IV) porphyrin and cis-dihydroxy-21-thiaporphyrin/21,23-dithiaporphyrin. The unique oxophilicity of tin(IV) porphyrin was the driving force for the formation of these tetrads. Moreover, these novel tetrads represent the first examples of cyclic porphyrins containing tin(IV) that are constructed exclusively on the basis of the "Sn-O" interaction without any other complementary, noncompetitive mode of interactions. The molecular structures of the cyclic tetrads have been investigated by matrix-assisted laser desorption ionization time-of-flight mass spectrometry, NMR spectroscopy, quantum-mechanical calculations, and, in one case, single-crystal X-ray crystallography. The X-ray structure revealed that the two cis-dihydroxy-N2S2 porphyrins were coordinated at the axial positions of two tin(IV) porphyrins, leading to the symmetric cyclic tetrad structure. The optical properties of tetrads were studied, and these compounds were stable under redox conditions. Preliminary photophysical studies carried out on the tetrads indicated efficient energy transfer from tin(IV) porphyrin to the thiaporphyrin unit, which highlights their potential applications in energy and electron transfer in the future.

原文英語
頁(從 - 到)13913-13929
頁數17
期刊Inorganic Chemistry
56
發行號22
DOIs
出版狀態已發佈 - 2017 十一月 20

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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    Alka, A., Pareek, Y., Shetti, V. S., Rajeswara Rao, M., Theophall, G. G., Lee, W. Z., Lakshmi, K. V., & Ravikanth, M. (2017). Construction of Novel Cyclic Tetrads by Axial Coordination of Thiaporphyrins to Tin(IV) Porphyrin. Inorganic Chemistry, 56(22), 13913-13929. https://doi.org/10.1021/acs.inorgchem.7b01966