666854-38-2Relevant academic research and scientific papers
Complexes Containing Sterically Demanding Cyclopentadienyl Ligands
Schumann, Herbert,Stenz, Susanne,Muehle, Stefan H.,Dechert, Sebastian
, p. 514 - 520 (2007/10/03)
1-tert-Butyl-2,4-cyclopentadiene (1), 1,3-di(tert-butyl)-2,4-cyclopentadiene (2), 1-ethyl-2,3,4,5-tetramethyl-2,4-cyc1opentadiene (3), 1-iso-propyl-2,3,4,5-tetramethyl-2,4-cyclopentadiene (4), 1-tert-butyl-2,3,4,5-tetramethyl-2,4-cyclopentadiene (5), and 1-phenyl-2,3,4,5-tetramethyl-2,4-cyclopentadiene (6) react with n-butyl lithium followed by tributyltin chloride to give the corresponding tributyl(cyclopentadienyl)stannanes Bu3SnCp 1a to 6a. The reactions of la to 6a with Ru(COD)Cl2 result in the formation of the corresponding ruthenocenes RuCp2 1b to 6b. Ru(C5H3Ph2)2 (7b) is prepared from [Ru(p-cymol)Cl2]2 and Na[C5H3Ph2]. The 1H and 13C NMR spectra of the new stannanes 1a to 6a and the ruthenocenes 1b to 7b as well as the single crystal X-ray structure of 4b are reported and discussed.
