The isolation of a highly arene-soluble alkali metal tetrafluoroborate complex, LiBF4·4HMPA [HMPA = OP(NMe2)3]: evidence for strong Li F interactions in solution

BARR, D and HUTTON, K B and MORRIS, J H and Mulvey, Robert and REED, D and SNAITH, R (1986) The isolation of a highly arene-soluble alkali metal tetrafluoroborate complex, LiBF4·4HMPA [HMPA = OP(NMe2)3]: evidence for strong Li F interactions in solution. Journal of the Chemical Society, Chemical Communications (2). pp. 127-129. ISSN 0022-4936 (https://doi.org/10.1039/C39860000127)

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Abstract

Reaction of BF3·OEt2 with 3 (BunLi·HMPA)[HMPA = OP(NMe2)3] has been monitored by variable-temperature 7Li and 11B n.m.r. spectroscopy and shown to produce a highly arene-soluble, crystalline complex, LiBF4·4HMPA, (1); spectroscopic, cryoscopic, and conductimetric measurements indicate that this exists in solution as tight lithium and tetrafluoroborate components held by Li F interactions.

ORCID iDs

BARR, D, HUTTON, K B, MORRIS, J H, Mulvey, Robert ORCID logoORCID: https://orcid.org/0000-0002-1015-2564, REED, D and SNAITH, R;
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