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Oxoanion recognition by benzene-based tripodal pyrrolic receptors
- Authors
- Bill, Nathan L.; Kim, Dae-Sik; Kim, Sung Kuk; Park, Jung Su; Lynch, Vincent M.; Young, Neil J.; Hay, Benjamin P.; Yang, Youjun; Anslyn, Eric V.; Sessler, Jonathan L.
- Issue Date
- Jan-2012
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- anion receptors; dihydrogen phosphate; hydrogen sulphate; theoretical calculations; X-ray structure
- Citation
- SUPRAMOLECULAR CHEMISTRY, v.24, no.1, pp 72 - 76
- Pages
- 5
- Journal Title
- SUPRAMOLECULAR CHEMISTRY
- Volume
- 24
- Number
- 1
- Start Page
- 72
- End Page
- 76
- ISSN
- 1061-0278
1029-0478
- Abstract
- Two new tripodal receptors based on pyrrole-and dipyrromethane-functionalised derivatives of a sterically geared precursor, 1,3,5-tris(aminomethyl)-2,4,6-triethylbenzene, are reported; these systems, compounds 1 and 2, display high affinity and selectivity for tetrahedral anionic guests, in particular dihydrogen phosphate, pyrophosphate and hydrogen sulphate, in acetonitrile as inferred from isothermal titration calorimetry measurements. Support for the anion-binding ability of these systems comes from theoretical calculations and a single-crystal X-ray diffraction structure of the 2:2 (host:guest) dihydrogen phosphate complex is obtained in the case of the pyrrole-based receptor system, 1.
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