74707-41-8Relevant academic research and scientific papers
Structurally Dynamical Organometal Complexes, II. Synthesis, Structure, and Dynamics of the Complexes C5H5M(2-R'C3H4)PR3 (M = Pd, Pt)
Werner, Helmut,Kuehn, Alfred,Burschka, Christian
, p. 2291 - 2307 (2007/10/02)
The complexes C5H5M(2-R'C3H4) (M = Pd with R'= Me, t-Bu; M = Pt with R'= Me) react with an equimolar amount of PR3 (PR3 = P(i-Pr)3, P(i-Bu)3, PPh2(t-Bu), PCy3, PPhCy2) to form the compounds C5H5M(2-R'C3H4)PR3.The 1H and 13C NMR spectra indicate that in the complexes C5H5Pd(2-t-BuC3H4)PR3 and C5H5Pt(2-MeC3H4)PR3 within the temperature range of -60 to +60 deg C the cyclopentadienyl ligand is monohapto-(?-) and the allylic ligand trihapto-(?-)bonded.The complexes C5H5Pd(2-MeC3H4)PR3 exist in solution as a mixture of two isomers, (h5-C2H5)Pd(h1-allyl)PR3 (A) and (h1-C5H5)Pd(h3-allyl)PR3 (B).For complex 14 (PR3 = PPhCy2) the thermodynamic and kinetic data of the intramolecular isomerisation process A B have been determined.The X-ray structural analysis of 5 proves that the monohapto coordination of the C5H5 and the trihapto coordination of the 2-t-BuC3H4 ligand is retained in the crystal.
