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

D BARR, K B HUTTON, J H MORRIS, Robert Mulvey, D REED, R SNAITH

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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.
Original languageEnglish
Pages (from-to)127-129
Number of pages3
JournalJournal of the Chemical Society, Chemical Communications
Issue number2
DOIs
Publication statusPublished - 15 Jan 1986

Keywords

  • arene-soluble alkali
  • tetrafluoroborate complex

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