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| Content Provider | PubMed Central |
|---|---|
| Author | Meng, Wenjing Ronson, Tanya K. Nitschke, Jonathan R. |
| Abstract | Here we describe the phenomenon of symmetry breaking within a series of M4L6 container molecules. These containers were synthesized using planar rigid bis-bidentate ligands based on 2,6-substituted naphthalene, anthracene, or anthraquinone spacers and FeII ions. The planarity of the ligand spacer favors a stereochemical configuration in which each cage contains two metal centers of opposite handedness to the other two, which would ordinarily result in an S 4-symmetric, achiral configuration. Reduction of symmetry from S 4 to C 1 is achieved by the spatial offset between each ligand’s pair of binding sites, which breaks the S 4 symmetry axis. Using larger CdII or CoII ions instead of FeII resulted, in some cases, in the observation of dynamic motion of the symmetry-breaking ligands in solution. NMR spectra of these dynamic complexes thus reflected apparent S 4 symmetry owing to rapid interconversion between energetically degenerate, enantiomeric C 1-symmetric conformations. |
| Related Links | http://dx.doi.org/10.1073/pnas.1302683110 |
| Ending Page | 10535 |
| Page Count | 5 |
| Starting Page | 10531 |
| File Format | |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 26 |
| Volume Number | 110 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2013-06-25 |
| Access Restriction | Open |
| Rights Holder | National Academy of Sciences |
| Subject Keyword | General Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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