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Lanthanum Does Form Stable Molecular Compounds in the +2 Oxidation State
Author(s) -
Hitchcock Peter B.,
Lappert Michael F.,
Maron Laurent,
Protchenko Andrey V.
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200704887
Subject(s) - electron paramagnetic resonance , lanthanum , oxidation state , squid , crystallography , solid state , cryptand , chemistry , diffraction , materials science , inorganic chemistry , physics , organic chemistry , catalysis , nuclear magnetic resonance , ecology , ion , optics , biology
Getting down to business : Reduction of the La III tricyclopentadienide complex [LaCp′′ 3 ] (Cp′′=η 5 ‐1,3‐(SiMe 3 ) 2 C 5 H 3 ) by K and [18]crown‐6 or [2,2,2]cryptand produced thermally stable mononuclear crystalline lanthanate(II) salts. The La +2 oxidation state in these complexes was confirmed both in solution (EPR) and the solid state (EPR, SQUID, X‐ray diffraction) and was supported by a computational study.
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