A Li8 cluster of three edge-connected Li4 tetrahedra held by Li–N, Li C, and Li Li interactions: crystal structure of (o-LiC6H4CH2·NLi·CH2CH2NMe2)4 and detection of metal metal coupling within it by 7Li COSY n.m.r. spectroscopy

BARR, D and CLEGG, W and HODGSON, S M and Mulvey, Robert and REED, D and SNAITH, R and WRIGHT, D S (1988) A Li8 cluster of three edge-connected Li4 tetrahedra held by Li–N, Li C, and Li Li interactions: crystal structure of (o-LiC6H4CH2·NLi·CH2CH2NMe2)4 and detection of metal metal coupling within it by 7Li COSY n.m.r. spectroscopy. Journal of the Chemical Society, Chemical Communications (5). pp. 367-369. ISSN 0022-4936 (https://doi.org/10.1039/C39880000367)

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Abstract

The compound (o-LiC6H4CH2·NLi·CH2CH2NMe2)n(1) is tetrameric (n= 4) in the crystal, with a core of three edge-connected Li4 tetrahedra bonded by N(Me2)Li, µ-N-amido-Li, o-C–Li, η2-o-C–m-CH–Li, and η3-CH2–α-C–o-C–Li interactions; in addition, the Li8 array displays some extremely short Li Li contact distances and coupling of Li atoms in solutions of (1) has been detected by homonuclear 7Li COSY n.m.r. spectroscopy.

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