AVS 65th International Symposium & Exhibition
    Actinides and Rare Earths Focus Topic Thursday Sessions
       Session AC-ThP

Paper AC-ThP3
Exploring the Electronic Structure of Molecular Lanthanide Complexes in the +2 Oxidation State Using Photoelectron Spectroscopy

Thursday, October 25, 2018, 6:00 pm, Room Hall B

Session: Actinides and Rare Earths Poster Session
Presenter: Daniel Huh, University of California, Irvine
Authors: D. Huh, University of California, Irvine
J.P. Bruce, University of California, Irvine
J.C. Hemminger, University of California, Irvine
W. Evans, University of California, Irvine
Correspondent: Click to Email
Recent advances in rare-earth metal reduction chemistry have led to the isolation of a new series of Ln(II) complexes. For Ln = Y, La, Ce, Nd, Gd, Tb, Dy, Ho, Er, and Lu, reduction of 4fn (C5H4SiMe3)3LnIII complexes generates [(C5H4SiMe3)3LnII]1– products that exhibit unusual 4fn5d1 mixed-principal quantum number electron configurations. X-ray photoelectron spectroscopy (XPS) has been employed to examine and compare these mixed-principal quantum number electronic structures with those of traditional Ln(II) complexes that have 4fn+1 configurations. In this work, X-ray and ultraviolet photoelectron spectroscopy have been used to examine the electronic structure of [K(2.2.2-cryptand)][(C5H4SiMe3)3LnII] (Ln = Eu, Gd, Tb) where Gd(II) and Tb(II) have previously been shown to have non-traditional 4f75d1 and 4f85d1 electronic configurations, respectively, and where Eu(II) has been shown to have a traditional 4f7 electronic configuration.