Abstract
The preparation of the ylide, pyridinium cyclopentadienylide, according to the synthesis of Lloyd and Sneezum, is reported. The behavior of the visible absorption band in solvents of different Z-value (empirical polarity measure) corresponds to that of an intramolecular charge-transfer transition and this conclusion is supported by comparison with the spectra of 4-carbamidopyridinium cyclopentadienylide. Photolysis of pyridinium cyclopentadienylide in n-heptane produces pyridine and a very unstable species, possibly the unknown hydrocarbon, fulvalene.
| Original language | English |
|---|---|
| Pages (from-to) | 856-860 |
| Number of pages | 5 |
| Journal | Journal of the American Chemical Society |
| Volume | 81 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1959 |
| Externally published | Yes |