Synthesis of [Li(CH2SiMe3)(pmdeta)] and the crystalline monomeric bulky alkyl-lithium complexes[LiR(tmeda)]and [LiR(pmdeta)][R = CH(SiMe3)2]; X-ray crystal structrue of [Li(CH(SiMe3)2)(pmdeta)](tmeda = Me2NCH2CH2NMe2, pmdeta = Me2N[CH2]2N(Me)[CH2]2NMe2)

Micheal F. Lappert, Lutz M. Engelhardt, Colin L. Raston, Allan H. White

Research output: Contribution to journalArticlepeer-review

82 Citations (Scopus)


Reaction of SiMe4 or CH2(SiMe3)2 in n-C6H14 with LiBun(pmdeta) affords in high yield Li(CH2SiMe3)-(pmdeta) or Li(CH(SiMe3)2)(pmdeta), (2), respectively, the latter also being available from Li(CH(SiMe3)2)-(tmeda), (1), and pmdeta; crystalline compound (1) and (2) are monomers (Ebullioscopy, C6H12), and for (2) this is also shown by X-ray crystallography, with the short Li-C distance [2.13(5)Å] indicative of a covalent bond.

Original languageEnglish
Pages (from-to)1323-1324
Number of pages2
JournalJournal of the Chemical Society - Series Chemical Communications
Issue number22
Publication statusPublished - 15 Nov 1982
Externally publishedYes


Dive into the research topics of 'Synthesis of [Li(CH<sub>2</sub>SiMe<sub>3</sub>)(pmdeta)] and the crystalline monomeric bulky alkyl-lithium complexes[LiR(tmeda)]and [LiR(pmdeta)][R = CH(SiMe<sub>3</sub>)<sub>2</sub>]; X-ray crystal structrue of [Li(CH(SiMe<sub>3</sub>)<sub>2</sub>)(pmdeta)](tmeda = Me<sub>2</sub>NCH<sub>2</sub>CH<sub>2</sub>NMe<sub>2</sub>, pmdeta = Me<sub>2</sub>N[CH<sub>2</sub>]<sub>2</sub>N(Me)[CH<sub>2</sub>]<sub>2</sub>NMe<sub>2</sub>)'. Together they form a unique fingerprint.

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