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- W4244958653 abstract "Flash photolysis of bis[4.5-di(methylsulfanyl) 1,3-dithiol-2-ylidene]-9,10(-dihydroanthracene (1) in chloroform leads to formation of the transient radical cation species 1.+ which has a diagnostic broad absorption band at lambdamax approximately 650 nm. This band decays to half its original intensity over a period of about 80 micros. Species 1.+ has also been characterised by resonance Raman spectroscopy. In degassed solution 1.+ disproportionates to give the dication 1(2+), whereas in aerated solutions the photodegradation product is the 10-[4,5-di(methylsulfanyl) 1,3-dithiol-2-ylidene]anthracene-9(10 H)one (2). The dication 1(2+) has been characterised by a spectroelectrochemical study [lambdamax (CH2Cl2) = 377, 392, 419, 479 nm] and by an X-ray crystal structure of the salt 1(2-) (ClO4)2, which was obtained by electrocrystallisation. The planar anthracene and 1,3-dithiolium rings in the dication form a dihedral angle of 77.2 degrees; this conformation is strikingly different from the saddle-shaped structure of neutral 1 reported previously." @default.
- W4244958653 created "2022-05-12" @default.
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- W4244958653 date "2001-03-02" @default.
- W4244958653 modified "2023-09-30" @default.
- W4244958653 title "Photochemistry of the π-Extended 9,10-Bis(1,3-dithiol-2-ylidene)- 9,10-dihydroanthracene System: Generation and Characterisation of the Radical Cation, Dication, and Derived Products" @default.
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- W4244958653 doi "https://doi.org/10.1002/1521-3765(20010302)7:5<973::aid-chem973>3.0.co;2-" @default.
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