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Vogelhuber, K.M.; Wren, S.W.; Shaffer, C.J.; McMahon, R.J.; McCoy, A.B.; Lineberger, W.C., Photoelectron spectroscopy of HC4N-, J. Chem. Phys., 2011, 135, 20, 204307, https://doi.org/10.1063/1.3663617 . [all data]