FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1777882614> ?p ?o ?g. }

• W1777882614 endingPage "1466" @default.
• W1777882614 startingPage "1451" @default.
• W1777882614 abstract "By CNDO-CI calculations we have found that dicarbonyl compounds exhibit only two n → π* transitions in the visible or near UV. region, instead of four as expected from simpler MO-models. The dominant features of the long-wavelength electronic spectra may be characterized by the relative energy of the two n and the two lowest π* orbitals. In general we distinguish between three cases: Large splitting (about 2 eV) both between the n and the π* orbitals. The longest-wavelength n → π* transition is shifted to the red. The higher transition remains roughly where it would appear in the monocarbonyl compound. No or very small splitting between either the two n, or the two π* orbitals, or both. Both n → π* transitions merge, roughly, in the wavelength region of the corresponding monocarbonyl compound. Intermediate (0.5–1.0 eV) splitting between the two n orbitals on one hand, the two π* orbitals on the other. Spectral properties between A. and B. The splitting between the two n orbitals and the two π* orbitals depends not only on the distance between the two carbonyl groups, but also very strongly on their mutual position and on the nature of the molecular fragment connecting them. As one would expect, in α-dicarbonyl compounds the splitting between the n orbitals is large, namely 1.8 eV. In some γ-diketones such as P-quinone, one still finds, however, a value of 0.7 eV. The splitting between the n orbitals gets significantly lowered if the two carbonyl groups are coaxial, but their 2pπ nodal planes are perpendicular to each other. In planar β-diketones the splitting between the π* orbitals is small, but may increase to an effective value of 0.4 eV when they are skewed. Our calculations agree well with measured electronic spectra and CD. data. An electrochromism experiment on camphorquinone convincingly supports our conclusions on α-dicarbonyl compounds." @default.
• W1777882614 created "2016-06-24" @default.
• W1777882614 creator A5008542489 @default.
• W1777882614 creator A5013588680 @default.
• W1777882614 creator A5042862531 @default.
• W1777882614 creator A5066073786 @default.
• W1777882614 creator A5083855180 @default.
• W1777882614 date "1971-01-01" @default.
• W1777882614 modified "2023-10-16" @default.
• W1777882614 title "<i>n</i>→π*-Übergänge in Dicarbonylverbindungen Der Einfluss der<i>n</i>,<i>n</i>- und π*, π*-Wechselwirkung" @default.
• W1777882614 cites W1485298534 @default.
• W1777882614 cites W1554425785 @default.
• W1777882614 cites W1968667060 @default.
• W1777882614 cites W1973899958 @default.
• W1777882614 cites W1974222835 @default.
• W1777882614 cites W1977396903 @default.
• W1777882614 cites W1989798641 @default.
• W1777882614 cites W1999285388 @default.
• W1777882614 cites W2007263658 @default.
• W1777882614 cites W2013940946 @default.
• W1777882614 cites W2020425508 @default.
• W1777882614 cites W2021879778 @default.
• W1777882614 cites W2025109728 @default.
• W1777882614 cites W2044574654 @default.
• W1777882614 cites W2052262185 @default.
• W1777882614 cites W2055426002 @default.
• W1777882614 cites W2057840242 @default.
• W1777882614 cites W2059258153 @default.
• W1777882614 cites W2088124671 @default.
• W1777882614 cites W2100557683 @default.
• W1777882614 cites W2140966340 @default.
• W1777882614 cites W2163191325 @default.
• W1777882614 cites W2312754984 @default.
• W1777882614 cites W2314465788 @default.
• W1777882614 cites W2319237462 @default.
• W1777882614 cites W2321804816 @default.
• W1777882614 cites W2321897605 @default.
• W1777882614 cites W2611712701 @default.
• W1777882614 cites W3025636040 @default.
• W1777882614 cites W4237981298 @default.
• W1777882614 cites W4238017747 @default.
• W1777882614 doi "https://doi.org/10.1002/hlca.19710540528" @default.
• W1777882614 hasPublicationYear "1971" @default.
• W1777882614 type Work @default.
• W1777882614 sameAs 1777882614 @default.
• W1777882614 citedByCount "45" @default.
• W1777882614 crossrefType "journal-article" @default.
• W1777882614 hasAuthorship W1777882614A5008542489 @default.
• W1777882614 hasAuthorship W1777882614A5013588680 @default.
• W1777882614 hasAuthorship W1777882614A5042862531 @default.
• W1777882614 hasAuthorship W1777882614A5066073786 @default.
• W1777882614 hasAuthorship W1777882614A5083855180 @default.
• W1777882614 hasConcept C121332964 @default.
• W1777882614 hasConcept C139358910 @default.
• W1777882614 hasConcept C147120987 @default.
• W1777882614 hasConcept C178790620 @default.
• W1777882614 hasConcept C184779094 @default.
• W1777882614 hasConcept C185592680 @default.
• W1777882614 hasConcept C189394030 @default.
• W1777882614 hasConcept C32909587 @default.
• W1777882614 hasConcept C38823869 @default.
• W1777882614 hasConcept C41999313 @default.
• W1777882614 hasConcept C53848692 @default.
• W1777882614 hasConcept C62520636 @default.
• W1777882614 hasConcept C8010536 @default.
• W1777882614 hasConcept C95306019 @default.
• W1777882614 hasConceptScore W1777882614C121332964 @default.
• W1777882614 hasConceptScore W1777882614C139358910 @default.
• W1777882614 hasConceptScore W1777882614C147120987 @default.
• W1777882614 hasConceptScore W1777882614C178790620 @default.
• W1777882614 hasConceptScore W1777882614C184779094 @default.
• W1777882614 hasConceptScore W1777882614C185592680 @default.
• W1777882614 hasConceptScore W1777882614C189394030 @default.
• W1777882614 hasConceptScore W1777882614C32909587 @default.
• W1777882614 hasConceptScore W1777882614C38823869 @default.
• W1777882614 hasConceptScore W1777882614C41999313 @default.
• W1777882614 hasConceptScore W1777882614C53848692 @default.
• W1777882614 hasConceptScore W1777882614C62520636 @default.
• W1777882614 hasConceptScore W1777882614C8010536 @default.
• W1777882614 hasConceptScore W1777882614C95306019 @default.
• W1777882614 hasIssue "5" @default.
• W1777882614 hasLocation W17778826141 @default.
• W1777882614 hasOpenAccess W1777882614 @default.
• W1777882614 hasPrimaryLocation W17778826141 @default.
• W1777882614 hasRelatedWork W2019781295 @default.
• W1777882614 hasRelatedWork W2065743405 @default.
• W1777882614 hasRelatedWork W2070182180 @default.
• W1777882614 hasRelatedWork W2136740477 @default.
• W1777882614 hasRelatedWork W2140392050 @default.
• W1777882614 hasRelatedWork W2224875233 @default.
• W1777882614 hasRelatedWork W25127989 @default.
• W1777882614 hasRelatedWork W2593184743 @default.
• W1777882614 hasRelatedWork W2595644743 @default.
• W1777882614 hasRelatedWork W2601226898 @default.
• W1777882614 hasVolume "54" @default.
• W1777882614 isParatext "false" @default.
• W1777882614 isRetracted "false" @default.
• W1777882614 magId "1777882614" @default.

• next