{"paper":{"title":"Spin-orbit coupling and rovibrational structure in the iododiacetylene radical cation by PFI-ZEKE photoelectron spectroscopy","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Daniel Zindel, Elias Bommeli, Fr\\'ed\\'eric Merkt, Guido Grassi, Katrin Dulitz","submitted_at":"2017-04-11T13:30:35Z","abstract_excerpt":"The photoelectron spectrum of the $\\textrm{X}^{+}\\,{}^{2}\\Pi \\leftarrow \\textrm{X}\\,{}^{1}\\Sigma^{+}$ photoionising transition in iododiacetylene, HC$_4$I, has been recorded using pulsed-field-ionisation zero-kinetic-energy (PFI-ZEKE) photoelectron spectroscopy with partial resolution of the rotational structure. The first adiabatic ionisation energy of HC$_4$I and the spin-orbit splitting of the X$^{+}\\,{}^{2}\\Pi$ state of HC$_4$I$^+$ are determined as $E^{\\textrm{ad}}_{\\textrm{I}}/(hc) = 74470.7(2)$ cm$^{-1}$ and $\\Delta\\tilde{\\nu}_{\\textrm{so}} = 1916.7(4)$ cm$^{-1}$, respectively. Several "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1704.03280","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}