Isolation and solution structures of {PhCH2NLiCH2CH2NMe2} n and of the totally rigid dilithium compound, {o-LiC6H4CH2NLiCH2CH2NMe2} n ; evidence for Li…o-HC interactions

BARR, D and SNAITH, R and WRIGHT, D S and Mulvey, Robert and JEFFREY, K and REED, D (1987) Isolation and solution structures of {PhCH2NLiCH2CH2NMe2} n and of the totally rigid dilithium compound, {o-LiC6H4CH2NLiCH2CH2NMe2} n ; evidence for Li…o-HC interactions. Journal of Organometallic Chemistry, 325 (1-2). C1-C6. ISSN 0022-328X (https://doi.org/10.1016/0022-328X(87)80411-4)

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Abstract

Monolithiation of N′-benzyl-N,N-dimethylethylenediamine produces {PhCH2NLiCH2CH2NMe2} n , believed to have a trimeric (NLi)3 ring structure in arene solutions. Lithium…o-HC interactions are implicated within this monolithiated compound since further lithiation proceeds smoothly and regiospecifically to give {o-LiC6H4CH2NLiCH2CH2NMe2} n . High-field 1H and 7Li NMR spectra show that this dilithium derivative (probably tetrameric) has a totally rigid solution structure brought about by intra- and inter-molecular N → Li coordinations.

ORCID iDs

BARR, D, SNAITH, R, WRIGHT, D S, Mulvey, Robert ORCID logoORCID: https://orcid.org/0000-0002-1015-2564, JEFFREY, K and REED, D;
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