First structurally characterised lithium hexafluorophosphate complexes with acyclic Lewis bases: Ion-separated [Li2(hmpa)5] 2+·2(PF6-) and ion-contacted [(pmdeta)LiPF6]2 [hmpa = (Me2N)3PO; pmdeta = MeN(CH2CH2NMe2)2]

David R. Armstrong; Amit H. Khandelwal; Lesley C. Kerr; Sonja Peasey; Paul R. Raithby; Gregory P. Shields; Ronald Snaith; Dominic S. Wright

doi:10.1039/a801280f

First structurally characterised lithium hexafluorophosphate complexes with acyclic Lewis bases: Ion-separated [Li₂(hmpa)₅] ²⁺·2(PF₆^-) and ion-contacted [(pmdeta)LiPF₆]₂ [hmpa = (Me₂N)₃PO; pmdeta = MeN(CH₂CH₂NMe₂)₂]

David R. Armstrong
, Amit H. Khandelwal
, Lesley C. Kerr
, Sonja Peasey
, Paul R. Raithby
, Gregory P. Shields
, Ronald Snaith
, Dominic S. Wright

University of Strathclyde
Defence Evaluation and Research Agency Rosyth
University of Cambridge

Research output: Contribution to journal › Article › peer-review

22 Citations (SciVal)

Abstract

Reactions of NH₄PF₆ with BuⁿLi in toluene containing hmpa or pmdeta afford the complexes [Li₂-(hmpa)₅]²⁺·2(PF₆) ^- 1, an ion-separated species containing an unusual dinuclear dication, and [(pmdeta)LiPF₆]₂ 2 in which PF₆^- anions bridge (pmdeta)Li⁺ units via Li⋯F interactions, this being the first observation of a bridging mode for this anion; ab initio MO calculations help explain the very different structures of 1 and 2.

Original language	English
Pages (from-to)	1011-1012
Number of pages	2
Journal	Chemical Communications
Issue number	9
DOIs	https://doi.org/10.1039/a801280f
Publication status	Published - 7 May 1998

ASJC Scopus subject areas

Catalysis
Electronic, Optical and Magnetic Materials
Ceramics and Composites
General Chemistry
Surfaces, Coatings and Films
Metals and Alloys
Materials Chemistry

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Armstrong, D. R., Khandelwal, A. H., Kerr, L. C., Peasey, S., Raithby, P. R., Shields, G. P., Snaith, R., & Wright, D. S. (1998). First structurally characterised lithium hexafluorophosphate complexes with acyclic Lewis bases: Ion-separated [Li₂(hmpa)₅] ²⁺·2(PF₆^-) and ion-contacted [(pmdeta)LiPF₆]₂ [hmpa = (Me₂N)₃PO; pmdeta = MeN(CH₂CH₂NMe₂)₂]. Chemical Communications, (9), 1011-1012. https://doi.org/10.1039/a801280f

First structurally characterised lithium hexafluorophosphate complexes with acyclic Lewis bases: Ion-separated [Li₂(hmpa)₅] ²⁺·2(PF₆^-) and ion-contacted [(pmdeta)LiPF₆]₂ [hmpa = (Me₂N)₃PO; pmdeta = MeN(CH₂CH₂NMe₂)₂]. / Armstrong, David R.; Khandelwal, Amit H.; Kerr, Lesley C. et al.
In: Chemical Communications, No. 9, 07.05.1998, p. 1011-1012.

Research output: Contribution to journal › Article › peer-review

Armstrong, DR, Khandelwal, AH, Kerr, LC, Peasey, S, Raithby, PR, Shields, GP, Snaith, R & Wright, DS 1998, 'First structurally characterised lithium hexafluorophosphate complexes with acyclic Lewis bases: Ion-separated [Li₂(hmpa)₅] ²⁺·2(PF₆^-) and ion-contacted [(pmdeta)LiPF₆]₂ [hmpa = (Me₂N)₃PO; pmdeta = MeN(CH₂CH₂NMe₂)₂]', Chemical Communications, no. 9, pp. 1011-1012. https://doi.org/10.1039/a801280f

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title = "First structurally characterised lithium hexafluorophosphate complexes with acyclic Lewis bases: Ion-separated [Li2(hmpa)5] 2+·2(PF6-) and ion-contacted [(pmdeta)LiPF6]2 [hmpa = (Me2N)3PO; pmdeta = MeN(CH2CH2NMe2)2]",

abstract = "Reactions of NH4PF6 with BunLi in toluene containing hmpa or pmdeta afford the complexes [Li2-(hmpa)5]2+·2(PF6) - 1, an ion-separated species containing an unusual dinuclear dication, and [(pmdeta)LiPF6]2 2 in which PF6- anions bridge (pmdeta)Li+ units via Li⋯F interactions, this being the first observation of a bridging mode for this anion; ab initio MO calculations help explain the very different structures of 1 and 2.",

author = "Armstrong, \{David R.\} and Khandelwal, \{Amit H.\} and Kerr, \{Lesley C.\} and Sonja Peasey and Raithby, \{Paul R.\} and Shields, \{Gregory P.\} and Ronald Snaith and Wright, \{Dominic S.\}",

year = "1998",

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AU - Armstrong, David R.

AU - Khandelwal, Amit H.

AU - Kerr, Lesley C.

AU - Peasey, Sonja

AU - Raithby, Paul R.

AU - Shields, Gregory P.

AU - Snaith, Ronald

AU - Wright, Dominic S.

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AB - Reactions of NH4PF6 with BunLi in toluene containing hmpa or pmdeta afford the complexes [Li2-(hmpa)5]2+·2(PF6) - 1, an ion-separated species containing an unusual dinuclear dication, and [(pmdeta)LiPF6]2 2 in which PF6- anions bridge (pmdeta)Li+ units via Li⋯F interactions, this being the first observation of a bridging mode for this anion; ab initio MO calculations help explain the very different structures of 1 and 2.

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