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Cleavage of Tris(cyclopentadienyl)lanthanide Complexes with Alkyllithium Compounds—a New Route to Alkylbis(cyclopentadienyl)lanthanides
Author(s) -
Schumann Herbert,
Jeske Gerald
Publication year - 1985
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198502251
Subject(s) - cyclopentadienyl complex , lanthanide , isobutane , chemistry , tris , neodymium , hydride , ligand (biochemistry) , cleavage (geology) , medicinal chemistry , catalysis , inorganic chemistry , organic chemistry , metal , materials science , ion , laser , biochemistry , physics , receptor , optics , fracture (geology) , composite material
Bis(cyclopentadieny)neodymium hydride 3 is a superb hydrogenation catalyst for alkynes . Exchange of a C 5 H 5 ligand in 1 for sec ‐ or tert ‐butyl (not for n ‐butyl) at −78°C affords 2a and 2b , respectively, the first alkylbis(cyclopentadienyl)neodymium complexes. 2a decomposes at −30°C to 3 and butene; 2b can be hydrogenated at room temperature to give 3 and isobutane.