Species with data from:

Batich, C.; Heilbronner, E.; Rommel, E.; Semmelhack, M.F.; Foos, J.S., Equivalence of the energy gaps {DELTA}I(1,2) and {DELTA}E(1,2) between corresponding bands in the photoelectron (I) and electronic absorption (E) spectra of spiro[4.4]nonatetraene. An amusing consequence of spiroconjugation, J. Am. Chem. Soc., 1974, 96, 7662.

6 matching species were found.

For each matching species the following will be displayed:

• Chemical name
• Chemical formula
• Structure image (if available)

Click on the name to see more data.

1. Cyclopentane (C₅H₁₀)
   
2. Cyclopentene (C₅H₈)
   
3. Spiro[4.4]nona-1,3,6,8-tetraene (C₉H₈)
   
4. Spiro[4.4]nona-1,3-diene (C₉H₁₂)
   
5. Spiro[4.4]nona-1,3,7-triene (C₉H₁₀)
   
6. Spiro[4.4]nona-1,3,6-triene (C₉H₁₀)