The Similarity between the π,π* Absorption Spectra of 1-Indenone and 1,2-Naphthoquinone
Akira Kuboyama,Hitoshi Matsumoto +1 more
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In this article, the π,π* absorption spectrum and solvent effect of 2-methyl-1-indenone have been found to be similar to those of 1,2-naphthoquinone.Abstract:
The π,π* absorption spectrum and its solvent effect of 2-methyl-1-indenone have been found to be similar to those of 1,2-naphthoquinone. This fact is discussed on the basis of the results calculated using the P-P-P method. The similarity of the calculated π-electronic structures in the low-energy π,π* singlet states between 1-indenone and 1,2-naphthoquinone is not so good as that between fluorenone and 9,10-phenanthrenequinone.read more
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Database of Absorption and Fluorescence Spectra of >300 Common Compounds for use in PhotochemCAD.
TL;DR: The previous databases for 150 compounds have been expanded to encompass 339 compounds for which absorption spectra, fluorescence spectra and references to the primary literature have been included where available (552 spectra altogether).
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Specific effects of a polar solvent in optical absorption spectra of 1,2-naphthoquinone
TL;DR: In this article, the optical absorption spectra of 1,2-naphthoquinone in polar (methanol) and nonpolar (n-hexane) solvents are recorded and it is found that the specific effect of a polar solvent, which manifests itself in a hypsochromic shift of the first nπ* band and in a bathochromic shift on the second and third ππ* bands, is caused by the formation of hydrogen bonds between solvent molecules and the molecule under study.
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The electronic absorption and emission spectra of biphenylene-2,3-dione in solutions.
TL;DR: In this article, the P-P-P method was used to calculate the electronic absorption and MCD spectra and phosphorescence spectra at 77 K, in solutions, and the longest-wavelength S-S ππ* band, near 370 nm, was proved to consist of two ρπ* bands, the 1A1 and 1B2 bands.
References
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The crystal and molecular structure of 9-fluorenone
H.R. Luss,D.L. Smith +1 more
TL;DR: In this paper, the authors present a single crystal diffractometry method for the single crystal Diffractometry (SDS) problem in the context of X-ray Crystallography.
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Dipole Moments and Absorption Spectra of o-Benzoquinone and its Related Substances
Saburo Nagakura,Akira Kuboyama +1 more
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Studies of the π–π* Absorption Bands of p-Quinones and o-Benzoquinone
TL;DR: The π-π* absorption spectra of p-benzoquinone, α-naphthoquinone and anthraquinone were obtained in n-heptane up to the vacuum UV region.
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Electronic Spectrum of Fluorenone
TL;DR: It has been concluded that fluorenone has four π→π* absorption bands in the near-ultraviolet region and the assignments of the 380 mμ and 310 mμ bands to the transition (A1→B2) and the 290 m μ and 250 mμbands to the Transition (A 1→A1) are favorable in view of the obtained results.
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UV‐Spektren und Konstitution von p‐Benzochinonen
TL;DR: In this article, die UV-Spektren substituierter p-Benzochinone zeigen eine charakteristische Abhangigkeit der Lage und Extinktion der zweiten Maxima von der Art, Stellung und Anzahl der Substituenten.