Expanding Rare-Earth Oxidation State Chemistry to Molecular Complexes of Holmium(II) and Erbium(II) MacDonald, Matthew R. ; Bates, Jefferson E. ; Fieser, Megan E. ; Ziller, Joseph W. ; Furche, Filipp ; Evans, William J. Abstract Publication: Journal of the American Chemical Society Pub Date: May 2012 DOI: 10.1021/ja303357w Bibcode: 2012JAChS.134.8420M