The solid state structures of ortho-lithio-β-(N,N-dimethylamino)ethoxybenzene and the corresponding sodium compound: A new type of organolithium tetramer and a first example of an organosodium hexamer

Journal of Organometallic Chemistry

Volumn 514, Issue 1-2, 1996, Pages 191-196

  Den Besten, Remco ^a   Lakin, Miles T ^b   Veldman, Nora ^b   Spek, Anthony L ^b   Brandsma, Lambert ^a  

^a UTRECHT UNIVERSITY   (Netherlands)

^b UTRECHT UNIVERSITY   (Netherlands)

Author keywords

Crystal structure; Lithium; Sodium

Indexed keywords

EID: 0030591513     PISSN: 0022328X     EISSN: None     Source Type: Journal    
DOI: 10.1016/0022-328X(95)06033-S     Document Type: Article

References (12)

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6. 2-of BuLi was observed. The aromatic ortho-protons of 1 are split up, yielding a broad signal for both the proton to be extracted and the adjacent one. Owing to the very low stability of this BuLi · 1 complex it was not possible to carry out a satisfactory study of the complex.
7. [7] (a) G. van Koten and J.G. Noltes in Comprehensive Organometallic Chemistry., Vol. 2, Pergamon, New York, 1976;
8. (b) A.E. Jukes, Adv. Organomet. Chem., 12 (1974) 215.
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12. [11] There is heavy debate on this topic. The ionicity seems to depend upon the analytical method used. Streitwieser (J. Comput. Chem., 1 (1980) 81) suggested a compromise of 80% ionicity for the carbon-lithium bond, a value which seems to be a good average of all results obtained over recent years.