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Synthesis and H-NMR complexation studies of alkalimetal bithioxanthylidene crown ether complexes |
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| Authors: | Anne Marie Schoevaars Ron Hulst Ben L. Feringa |
| Affiliation: | Department of Organic and Molecular Inorganic Chemistry, Groningen Center of Catalysis and Synthesis, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands |
| Abstract: | Two synthetic routes to a novel class of sterically overcrowded alkenes, bithioxanthylidene crown ethers 1, are described. The 1H spin-lattice relaxation times (T1) of the crown ethers as well as those of the corresponding complexes with Li+, Na+, K+, Rb+ and Cs+ in CDCl3 were measured and the results were interpreted in terms of complexation affinities. |
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