A zirconocene(IV) chloro-alkyl and dialkyl containing chiral α-cabon atoms, [Zr(η-C5H5)2(R*)(X)][R*= CH(SiMe3)C6H4Me-o, X = Cl or R*]: synthesis, stereoisomerism, and d1reduction products
- 1 January 1981
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Chemical Communications
- No. 4,p. 173-175
- https://doi.org/10.1039/c39810000173
Abstract
Reactions of [Zr(η-C5H5)2Cl2] with LiR*(tmeda)[R*= CH(SiMe3)C6H4Meo, tmeda = Me2NCH2CH2–NMe2] under different conditions yield [Zr(η-C5H5)2(Cl)R*](3), and the diastereoisomers meso-(2a) and rac-(2b)[Zr(η-C5H5)2R*2], the latter of which is prepared from (2a) by photolysis or thermolysis; [Zr(η-C5H5)2R*(thf)x](x= 0–2) is obtained and characterised by e.s.r. spectroscopy in tetrahydrofuran (thf) solution by (a) Na [C10H8]–thf reduction of complex (2a), (2b), or (3)[via the radical anion of (3), itself accessible by reversible one-electron reduction of (3)], or (b) Na–Hg–thf-reduction of (3).Keywords
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