Crown ether complexes of potassium and thallium(I) 2- and 4-nitrophenoxides |
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| Authors: | Lyman R Caswell James E Hardcastle Thomas A Jordan Iftikhar Alam Karen A McDowell Cynthia A Mahan Frank R Fronczek Richard D Candour |
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| Institution: | (1) Department of Chemistry and Physics, The Texas Woman's University, 76204 Denton, TX, USA;(2) Department of Chemistry, Louisiana State University, 70803 Baton Rouge, LA, USA |
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| 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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| Keywords: | Nitrophenoxides visible spectra crown ethers |
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