Abstract
18-Crown-6 and dicyclohexano-18-crown-6 complexes of potassium 2- and 4-nitrophenoxide, and 18-crown-6 complexes of thallium(I) 2- and 4-nitrophenoxide have been synthesized. Solvent effects on the visible spectra of the nitrophenoxide anions are independent of the nature of the cation and the nature of the complexing agent. The 18-crown-6 complex of thallium(I) 2-nitrophenoxide is a 1:2 complex. All the other complexes are 1:1. X-ray crystallographic examination of the potassium dicyclohexano-18-crown-6 complexes showed the potassium ion is octacoordinated in the 2-nitrophenoxide and heptacoordinated in the 4-nitrophenoxide.
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Caswell, L.R., Hardcastle, J.E., Jordan, T.A. et al. Crown ether complexes of potassium and thallium(I) 2- and 4-nitrophenoxides. J Incl Phenom Macrocycl Chem 13, 37–45 (1992). https://doi.org/10.1007/BF01076669
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DOI: https://doi.org/10.1007/BF01076669