Direct observation of high-spin states in manganese dimer and trimer cations by x-ray magnetic circular dichroism spectroscopy in an ion trap

V. Zamudio-Bayer, K. Hirsch, A. Langenberg, M. Kossick, A. Lawicki, A. Terasaki, B. V. Issendorff, J. T. Lau

研究成果: Contribution to journalArticle査読

18 被引用数 (Scopus)

抄録

The electronic structure and magnetic moments of free Mn 2 + and Mn 3 + are characterized by 2p x-ray absorption and x-ray magnetic circular dichroism spectroscopy in a cryogenic ion trap that is coupled to a synchrotron radiation beamline. Our results directly show that localized magnetic moments of 5 μB are created by 3d5(6S) states at each ionic core, which are coupled ferromagnetically to form molecular high-spin states via indirect exchange that is mediated in both cases by a delocalized valence electron in a singly occupied 4s derived antibonding molecular orbital with an unpaired spin. This leads to total magnetic moments of 11 μB for Mn 2 + and 16 μB for Mn 3 +, with no contribution of orbital angular momentum.

本文言語英語
論文番号234301
ジャーナルJournal of Chemical Physics
142
23
DOI
出版ステータス出版済み - 6 21 2015

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)
  • 物理化学および理論化学

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