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The influence of multiple fluorination on the ring opening of [2.2.2]propellane


Antol, Ivana; Eckert-Maksić, Mirjana
The influence of multiple fluorination on the ring opening of [2.2.2]propellane // Croatica chemica acta, 90 (2017), 2; 215-223 doi:10.5562/cca3172 (međunarodna recenzija, članak, znanstveni)


Naslov
The influence of multiple fluorination on the ring opening of [2.2.2]propellane

Autori
Antol, Ivana ; Eckert-Maksić, Mirjana

Izvornik
Croatica chemica acta (0011-1643) 90 (2017), 2; 215-223

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Ab initio calculations ; grob rearrangement ; isomerization, [2.2.2]propellane ; fluorination

Sažetak
Effect of electronegative substituents on ring opening of [2.2.2]propellane was examined by quantum chemical calculations at CASSCF and CASPT2 level of theory. Comparison of the results with those obtained with MR-AQCC calculations indicated that calculations beyond CASSCF level were needed for reliable description of the process. Calculations show a strong effect of fluorination on the central bond elongation energy profile, with the effect being most pronounced for the perfluoro derivative. Moreover, for rearrangement of the most of multiply fluorinated derivatives, including perfluoro[2.2.2]propellane, CASPT2 calculations predict a single minimum potential energy well, which hampers rearrangement to significantly more stable fluorinated 1, 4- dimethylenecyclohexane analogues. This observation is in harmony with high stability of synthetically available stable heavily fluorinated derivatives which, in contrast to the parent [2.2.2]propellane, does not rearrange to the thermodynamically most stable fluorinated 1, 4-dimethylene-cyclohexane isomer.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
098-0982933-2920 - Organski i bioorganski procesi u osnovnom i elektronski pobuđenim stanjima (Mirjana Maksić, )

Ustanove
Institut "Ruđer Bošković", Zagreb

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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