Sökning: onr:"swepub:oai:DiVA.org:uu-513008" >
Photochemistry Driv...
Photochemistry Driven by Excited-State Aromaticity Gain or Antiaromaticity Relief
-
- Yan, Jiajie (författare)
- Uppsala universitet,Institutionen för kemi - Ångström
-
- Slanina, Tomáš (författare)
- Uppsala universitet,Institutionen för kemi - Ångström,Czech Acad Sci, Inst Organ Chem & Biochem, Flemingovo Namesti 2, Prague, Czech Republic
-
- Bergman, Joakim (författare)
- AstraZeneca, Renal & Metab BioPharmaceut R&D, Med Chem, Res & Early Dev Cardiovasc, Gothenburg, Sweden
-
visa fler...
-
- Ottosson, Henrik (författare)
- Uppsala universitet,Institutionen för kemi - Ångström
-
visa färre...
-
(creator_code:org_t)
- 2023-02-24
- 2023
- Engelska.
-
Ingår i: Chemistry - A European Journal. - : Wiley-VCH Verlagsgesellschaft. - 0947-6539 .- 1521-3765. ; 29:19
- Relaterad länk:
-
https://doi.org/10.1...
-
visa fler...
-
https://uu.diva-port... (primary) (Raw object)
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
visa färre...
Abstract
Ämnesord
Stäng
- Gain of aromaticity or relief of antiaromaticity along a reaction path are important factors to consider in mechanism studies. Analysis of such changes along potential energy surfaces has historically focused on reactions in the electronic ground state (S-0), but can also be used for excited states. In the lowest pi pi* states, the electron counts for aromaticity and antiaromaticity follow Baird's rule where 4n pi-electrons indicate aromaticity and 4n+2 pi-electrons antiaromaticity. Yet, there are also cases where Huckel's rule plays a role in the excited state. The electron count reversals of Baird's rule compared to Huckel's rule explain many altered physicochemical properties upon excitation of (hetero)annulene derivatives. Here we illustrate how the gain of excited-state aromaticity (ESA) and relief of excited-state antiaromaticity (ESAA) have an impact on photoreactivity and photostability. Emphasis is placed on recent findings supported by the results of quantum chemical calculations, and photoreactions in a wide variety of areas are covered.
Ämnesord
- NATURVETENSKAP -- Kemi -- Organisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Organic Chemistry (hsv//eng)
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
Nyckelord
- antiaromaticity
- aromaticity
- Baird's rule
- excited states
- photoreactivity
Publikations- och innehållstyp
- ref (ämneskategori)
- for (ämneskategori)
Hitta via bibliotek
Till lärosätets databas