Das, Madhab C. ; Ghosh, Sujit K. ; Bharadwaj, Parimal K. (2010) Diversity of binding of sulfate and nitrate anions with laterally asymmetric aza cryptands CrystEngComm, 12 (2). pp. 413-419. ISSN 1466-8033
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Official URL: http://pubs.rsc.org/en/Content/ArticleLanding/2010...
Related URL: http://dx.doi.org/10.1039/B912264H
Abstract
An X-ray crystallographic study of binding of nitrate and sulfate anions with two laterally asymmetric aza cryptands (Lo and Lm) having different cavity dimensions is reported. A variety of binding modes for these anions have been observed. Cryptand Lm having a larger cavity than that of Lo, prefers to encapsulate a planar nitrate over Td sulfate in its cavity when both anions are available for complexation. A discrete (H2O)29 cluster can be identified as surrounded by six sulfate ions attached to two Lm units. 1H NMR titration results indicate that either [H3Lo]3+ or [H3Lm]3+ binds strongly with sulfate rather than nitrate in solution.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Royal Society of Chemistry. |
| ID Code: | 4990 |
| Deposited On: | 18 Oct 2010 05:59 |
| Last Modified: | 18 May 2011 07:09 |
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