Pentadienyl chemistry of the heavy alkaline-earth metals revisited

摘要

Open-metallocenes of the heavy alkaline-earth metals (η~5-Pdl')2-M(thf)_n (M = Ca (1), Sr (2), n = 1; M = Ba (3), n = 2; Pdl' = 2,4-tBu_2C_5H_5) are readily prepared by salt-metathesis between MI2 and KPdl' and characterized by NMR spectroscopy and X-ray diffraction studies.