Millimeter/submillimeter velocity modulation spectroscopy of FeO + (X6Σ+): Characterizing metal oxide cations

D. T. Halfen, L. M. Ziurys

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


The pure rotational spectrum of FeO+ (X 6Σ +) has been recorded using millimeter/submillimeter velocity modulation techniques, the first high-resolution measurement of a metal oxide cation. FeO+ was created in an AC discharge from Fe(CO)5 and N2O. Nine rotational transitions were recorded in the range 299-544 GHz, each consisting of six fine-structure components. The data were analyzed with a case (b) Hamiltonian, and rotational and spin parameters determined. The spin-spin constant suggests a low-lying 4Σ - excited state. The bond length established for FeO+, r0 = 1.641, is slightly longer than that of FeO, consistent with a covalent bonding scheme.

Original languageEnglish (US)
Pages (from-to)8-13
Number of pages6
JournalChemical Physics Letters
Issue number1-3
StatePublished - Aug 20 2010

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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