Design, synthesis, and structure of novel cesium receptors |
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| Authors: | Jeffrey C. Bryan Benjamin P. Hay Richard A. Sachleben Cassandra T. Eagle Cungen Zhang Peter V. Bonnesen |
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| Affiliation: | (1) Chemistry Department, University of Wisconsin-La Crosse, 1725 State Street, La Crosse, Wisconsin, 54601;(2) Pacific Northwest National Laboratory, USA;(3) Appalachian State University, USA;(4) Oak Ridge National Laboratory, USA |
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| Abstract: | The podand, bis(2-methoxyphenoxy)m-xylene (1), was designed and synthesized as a potential host for the cesium ion. Its structure was determined by single crystal X-ray diffraction. It crystallizes in P21/c with cell dimensions: a = 8.5723(7) Å, b = 8.3931(14) Å, c = 25.2879(26) Å,  = 96.224(9) , and V = 1808.7(4) Å3. A crown derivative, tribenzo-21-crown-6 (2), was also prepared and structurally characterized. It also crystallizes in P21/c with cell dimensions: a = 15.5825(13) Å, b = 15.8648(16) Å, c = 8.8266(7) Å, = 95.247(6), and V = 2172.9(3) Å3. The structures exhibit hydrogen bonding, and are evaluated in terms of complementarity and preorganization for cesium binding. |
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| Keywords: | Crystal structure synthesis conformation cesium crown ether design |
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