Monocyclopentadienyl zirconium and hafnium alkyls: synthesis, hydrogen-transfer reactions and catalytic features in the reactivity with. alpha.-olefins. The x-ray …
Y Wielstra, S Gambarotta, AL Spek
文献索引：Wielstra, Ytsen; Gambarotta, Sandro; Spek, Anthony L. Organometallics, 1990 , vol. 9, p. 572 - 577
The dissociation of one of the two equatorial dmpe [dmpe= 1, 2-bis (dimethylphosphino) ethane] of CpM (dmpe) 2X [X= C1 (1), Me (2); M= Zr (a), Hf (b)], allows the preparation of the new class of butadiene derivatives CpM (v4-butadiene)(dmpe) X [X= C1 (4a, b), Me (5a)], via mild-condition ligand-replacement reaction. The structure of 4 was demonstrated by X-ray diffraction analysis. Crystal data are as follows: monoclinic, R1/n, a= 8.230 (l), b= 15.896 (l ...
