Abstract
Two new macrocyclic crown ethers containing one or two selenium donor atoms have been prepared. Diselena-18-crown-6 (2) was found to transport silver ions through a methylene chloride bulk membrane at about the same rate as the analogous dithia- (3) and diaza-18-crown-6 (4) compounds and transported lead ions about the same as dithia-18-crown-6 but better than diaza-18-crown-6.
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McDaniel, C.W., Bradshaw, J.S., Tarbet, K.H. et al. Synthesis of two new crown ethers containing selenium and the complexation of one of them with silver and lead. J Incl Phenom Macrocycl Chem 7, 545–548 (1989). https://doi.org/10.1007/BF01080465
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DOI: https://doi.org/10.1007/BF01080465