Tetrahedron Letters p. 245 - 248 (1997)
Update date:2022-08-11
Topics:
Izuoka, Akira
Murase, Tomohide
Tsukada, Mitsuyosi
Ito, Yuko
Sugawara, Tadashi
Uchida, Akira
Sato, Naoki
Inokuchi, Hiroo
The crystal structure of an endoperoxide of tetrabenzo[de,hi,op,st]pentacene (TBPA-O2) was determined by X-ray crystallography. The unusually long O-O and C-O bonds were rationalized by the characteristic molecular structure of TBPA-O2. The photochromic behavior between TBPA-O2 and TBPA was discussed based on the enthalpy difference between TBPA-O and TBPA + O2 and the thermodynamic parameters of the extrusion of oxygen from TBPA-O2.
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