Solvent‐free Tris(trimethylsilyl)methyllithium | Zendy

Hiller Wolfgang | Zendy; Layh Marcus | Zendy; Uhl Werner | Zendy

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Solvent‐free Tris(trimethylsilyl)methyllithium

Author(s) -

Hiller Wolfgang,

Layh Marcus,

Uhl Werner

Publication year - 1991

Publication title -

angewandte chemie international edition in english

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.831

H-Index - 550

eISSN - 1521-3773

pISSN - 0570-0833

DOI - 10.1002/anie.199103241

Subject(s) - methyllithium , trimethylsilyl , agostic interaction , chemistry , solvent , tris , crystal structure , monomer , crystallography , atom (system on chip) , stereochemistry , medicinal chemistry , organic chemistry , metal , biochemistry , computer science , embedded system , polymer

n BuLi first reacts with BrHgC(SiMe 3 ), at 65–70 0 C in the melt to give the title compound within an hour. This is monomeric in solution and dimeric in the crystal (structure on the right), a novel structural type for solvent‐free alkyllithium compounds. Apart from the two direct bonds from Li to the carbanionic C‐atoms there are also agostic interactions with two H atoms of the SiMe 3 substituents, so that each Li atom is coordinated altogether in a distorted tetrahedral fashion.

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