Lanthanum Does Form Stable Molecular Compounds in the +2 Oxidation State Hitchcock, Peter B. ; Lappert, Michael F. ; Maron, Laurent ; Protchenko, Andrey V. Abstract Publication: Angewandte Chemie Pub Date: February 2008 DOI: 10.1002/ange.200704887 Bibcode: 2008AngCh.120.1510H