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Butenyl‐Substituted Alkaline‐Earth Metallocenes: A First Step towards Olefin Complexes of the Alkaline‐Earth Metals
Author(s) -
Schumann Herbert,
Schutte Stefan,
Kroth HeinzJürgen,
Lentz Dieter
Publication year - 2004
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.200460927
Subject(s) - alkaline earth metal , rare earth , olefin fiber , chemistry , earth (classical element) , inorganic chemistry , alkaline battery , alkali metal , mineralogy , organic chemistry , catalysis , physics , electrode , electrolyte , mathematical physics
Sandwich any one? The bis(butenyltetramethylcyclopentadienyl) complexes of calcium ( 2 ), strontium and barium exhibit an interaction of the alkaline‐earth metals with olefin double bonds. Whereas the magnesium derivative ( 1 ) crystallizes as a sandwich complex with coplanar cyclopentadienyl ligands and free butenyl side chains, these coordinate to the metal in the analogous but open sandwich complexes of the larger metals calcium, strontium, and barium.