Electronic spectra of the C70 molecule and C70+, C70 ions in neon matrices

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Abstract

The long-wavelength part of the electronic absorption spectrum of C70 isolated in a 5 K neon matrix was observed with well-resolved vibrational structure. Its origin lines at 15690 cm−1. The electronic transitions of C70+ and C70 were detected after Ne I irradiation of C70 during deposition. C70 has a broad absorption (fwhm ≈ 330 cm−1) centered at 7336 cm−1. The absorption of C70+ is found in the range of 12400 to 14000 cm−1 and assigned to the 2E1′←2E1″ transition. The spectrum is also discernible by growing a matrix with mass selected C70+ ion beam.

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