Abstract

Infrared bands of carbin chains C n ( n = 8−12) and C − ( n = 5−10, 12) have been observed in neon matrices in the 1600–2100 cm −1 region. The matrices were grown at 5 K by codepositing mass-selected carbon anions with excess of neon. The neutral carbon chains were obtained from the anions by photodetachment. The assignments of the infrared transitions are based on mass-selection, photobleaching behaviour, intensity correlation with the known electronic transitions, and available ab initio calculations.

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