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Electronic absorption spectra of CCS− and CCS in neon matrices

✍ Scribed by Evgueni Riaplov; Muriel Wyss; John P Maier; Dietmar Panten; Gilberte Chambaud; Pavel Rosmus; Juergen Fabian

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
407 KB
Volume
222
Category
Article
ISSN
0022-2852

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✦ Synopsis

Mass selected C 2 S À ions have been co-deposited with neon to grow a matrix at 6 K. The A 2 R þ X 2 P and B 2 P X 2 P electronic absorption spectra of the linear CCS À anion have been identified with origin band at 10 606 and 22 273 cm À1 , respectively. After exposure to UV radiation a new electronic transition ðE 3 R À X 3 R À Þ of CCS is observed (origin band at 30 563 cm À1 ) in addition to its known A 3 P X 3 R À band system. Ab initio calculations provide support for the symmetry assignment of the upper electronic states of CCS À , CCS and of the vibrational structure in the spectra.

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