Crystal and solution structures of the novel complex of sodium ketimide with two ketimine ligands [(tBu2C = NNa)4(HN = CtBu2)2]: stacking of complexed and uncomplexed (NNa)2 rings to give a highly distorted (NNa)4 cubane

W CLEGG, M MACGREGOR, Robert Mulvey, P A ONEIL

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Abstract

Structure determinations of organometallic compounds of alkali metals often reveal new surprises: In the case of the sodium ketimide [(tBu2C = NNa)4(HN = CtBu2)2] 1, nonmetalated ketimine units function surprisingly as monodentate ligands for two of the four Na+ ions in the cubane-like (NNa)4 framework. This contrasts significantly with the well-known lithium ketimides such as (tBu2C = NLi)6, which in general resist complexation. Applying the ''ring-stacking principle'' from organolithium compounds, 1 can be interpreted as a twofold stack of (NNa)2 rings.

LanguageEnglish
Pages93-95
Number of pages3
JournalAngewandte Chemie International Edition
Volume31
Issue number1
DOIs
Publication statusPublished - Jan 1992

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Alkali metals
Organometallics
Complexation
Lithium
Ligands
Sodium
Crystals
Ions

Keywords

  • lithium
  • sodium ketimide
  • crystal structures

Cite this

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title = "Crystal and solution structures of the novel complex of sodium ketimide with two ketimine ligands [(tBu2C = NNa)4(HN = CtBu2)2]: stacking of complexed and uncomplexed (NNa)2 rings to give a highly distorted (NNa)4 cubane",
abstract = "Structure determinations of organometallic compounds of alkali metals often reveal new surprises: In the case of the sodium ketimide [(tBu2C = NNa)4(HN = CtBu2)2] 1, nonmetalated ketimine units function surprisingly as monodentate ligands for two of the four Na+ ions in the cubane-like (NNa)4 framework. This contrasts significantly with the well-known lithium ketimides such as (tBu2C = NLi)6, which in general resist complexation. Applying the ''ring-stacking principle'' from organolithium compounds, 1 can be interpreted as a twofold stack of (NNa)2 rings.",
keywords = "lithium, sodium ketimide , crystal structures",
author = "W CLEGG and M MACGREGOR and Robert Mulvey and ONEIL, {P A}",
year = "1992",
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T1 - Crystal and solution structures of the novel complex of sodium ketimide with two ketimine ligands [(tBu2C = NNa)4(HN = CtBu2)2]: stacking of complexed and uncomplexed (NNa)2 rings to give a highly distorted (NNa)4 cubane

AU - CLEGG, W

AU - MACGREGOR, M

AU - Mulvey, Robert

AU - ONEIL, P A

PY - 1992/1

Y1 - 1992/1

N2 - Structure determinations of organometallic compounds of alkali metals often reveal new surprises: In the case of the sodium ketimide [(tBu2C = NNa)4(HN = CtBu2)2] 1, nonmetalated ketimine units function surprisingly as monodentate ligands for two of the four Na+ ions in the cubane-like (NNa)4 framework. This contrasts significantly with the well-known lithium ketimides such as (tBu2C = NLi)6, which in general resist complexation. Applying the ''ring-stacking principle'' from organolithium compounds, 1 can be interpreted as a twofold stack of (NNa)2 rings.

AB - Structure determinations of organometallic compounds of alkali metals often reveal new surprises: In the case of the sodium ketimide [(tBu2C = NNa)4(HN = CtBu2)2] 1, nonmetalated ketimine units function surprisingly as monodentate ligands for two of the four Na+ ions in the cubane-like (NNa)4 framework. This contrasts significantly with the well-known lithium ketimides such as (tBu2C = NLi)6, which in general resist complexation. Applying the ''ring-stacking principle'' from organolithium compounds, 1 can be interpreted as a twofold stack of (NNa)2 rings.

KW - lithium

KW - sodium ketimide

KW - crystal structures

U2 - 10.1002/anie.199200931

DO - 10.1002/anie.199200931

M3 - Article

VL - 31

SP - 93

EP - 95

JO - Angewandte Chemie International Edition

T2 - Angewandte Chemie International Edition

JF - Angewandte Chemie International Edition

SN - 1433-7851

IS - 1

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