UV spectra of iron-doped carbon clusters FeC_n n = 3-6

Mathias Steglich; Xiaojing Chen; Anatoly Johnson; John P. Maier

doi:10.1016/j.ijms.2014.02.006

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arXiv · 1502.05310

UV spectra of iron-doped carbon clusters FeC_n n = 3-6

Mathias Steglich·Xiaojing Chen·Anatoly Johnson·John P. Maier

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Abstract

Electronic transitions of jet-cooled FeC$_n$ clusters ($n = 3 - 6$) were measured between 230 and 300 nm by a mass-resolved 1+1 resonant two-photon ionization technique. Rotational profiles were simulated based on previous calculations of ground state geometries and compared to experimental observations. Reasonable agreement is found for the planar fan-like structure of FeC$_3$. The FeC$_4$ data indicate a shorter distance between the Fe atom and the bent C$_4$ unit of the fan. The transitions are suggested to be $^{3}$A$_{2} \leftarrow ^{3}$B$_{1}$ for FeC$_3$ and $^{5}$A$_{1} \leftarrow ^{5}$A$_{1}$ for FeC$_4$. In contrast to the predicted C$_{\infty \text{v}}$ geometry, non-linear FeC$_5$ is apparently observed. Line width broadening prevents analysis of the FeC$_6$ spectrum.

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Mathias Steglich, Xiaojing Chen, Anatoly Johnson, John P. Maier. 2015-02-18. UV spectra of iron-doped carbon clusters FeC_n n = 3-6. https://doi.org/10.1016/j.ijms.2014.02.006

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