Electronic absorption spectra of carbon chain anions C-2n+1(-) (n=2-5) in neon matrices

被引:32
作者
Forney, D [1 ]
Grutter, M [1 ]
Freivogel, P [1 ]
Maier, JP [1 ]
机构
[1] UNIV BASEL,INST PHYS CHEM,CH-4056 BASEL,SWITZERLAND
关键词
D O I
10.1021/jp970954k
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Absorption spectra showing transitions to several excited electronic states of C-2n+1(-) (n = 2-5) chains were observed. The spectra were recorded after codeposition of mass-selected anions with neon to form a matrix at 5 K. The assignment follows from mass-selection, the monotonic dependence of the wavelength of the electronic origin band on the number of carbon atoms, photobleaching changes, and spectroscopic considerations. The absorption band systems can be attributed to (2) Pi <-- X (2) Pi. transitions. For C-5(-) two transitions are observed, for C-7(-) three, and for C-9(-) and C-11(-) four.
引用
收藏
页码:5292 / 5295
页数:4
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