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(η 3 ‐Allyl)(η 4 ‐butadiene)(η 5 ‐cyclopentadienyl)‐zirconium, a System of Isomeric Monocyclopentadienylzirconium( II ) Compounds
Author(s) -
Erker Gerhard,
Berg Klaus,
Krüger Carl,
Müller Gerhard,
Angermund Klaus,
Benn Reinhard,
Schroth Gerhard
Publication year - 1984
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.198404551
Subject(s) - chemistry , cyclopentadienyl complex , zirconium , 1,3 butadiene , irradiation , radiochemistry , medicinal chemistry , inorganic chemistry , organic chemistry , physics , nuclear physics , catalysis
Ligands which open “upwards” and “downwards” cause the isomerism in the Zr II complexes 1 and 2 . Depending on the conditions, successive treatment of Cp 2 ZrCl 2 with allylMgCl and “butadiene‐Mg” gives pure 1 or a mixture of 1 and 2 . Irradiation of 1 at −40°C converts it almost quantitatively into 2 , which isomerizes to 1 on heating.