Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 85-61-0, Name is Coenzyme A, molecular formula is , belongs to dioxoles compound. In a document, author is GLEITER, R, Application In Synthesis of Coenzyme A.
DONOR-ACCEPTOR SPIRO-COMPOUNDS – SYNTHESES, STRUCTURES, AND ELECTRONIC-PROPERTIES
The six donor-acceptor spiro compounds spiro[1,3-dioxolane-2,2′-indan]-1′,3′-dione (8), spiro[indan-2,2′-[1,3]oxathiolane]-1,3-dione (9), spiro[1,3-dithiolane-2,2′-indan]-1′,3′-dione (10), spiro[1,3-benzodioxole-2,2′-indan]-1′,3′-dione (11), 5-methylspiro[1,3-benzodithiole-2,2′-indan]-1′,3′-dione (12), and spiro[indan-2,2′-naphtho[2,3-d]-1,3-dioxole]-1,3-dione (13) have been prepared. Their He(I) photoelectron spectra and their UV/Vis spectra have been investigated. A comparison between the first PE bands of the spiro compounds and the corresponding fragments indicates only a very weak interaction between both parts. The UV/Vis spectra of 11-13 show a moderate long-wavelength shift of the first band as compared to 1,3-indandione. This band is assigned to a transition from the HOMO(pi), localized at the donor fragment, to the LUMO(pi*) of the acceptor moiety (charge transfer). X-ray investigations of 8-10 and 13 show no interaction between the two perpendicularly arranged moieties.
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Reference:
1,3-Benzodioxole – Wikipedia,
,Dioxole | C3H4O2 – PubChem