Lithiated amidines: Syntheses and structural characterisations

Barker, J.; Barr, D.; Barnett, N.D.R; Clegg, W.; Cragg-Hine, I.; Davidson, M.G.; Davies, R.P.; Hodgson, S.M.; Howard, J.A.K.; Kilner, M; Lehmann, C.; Lopez-Solera, I; Mulvey, R.E.; Raithby, P.R.; Snaith, R

doi:10.1039/a605849c

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

このアイテムの新しいバージョンが利用可能です:
https://pure.mpg.de/pubman/item/item_2087751_8

詳細要約

公開

学術論文

Lithiated amidines: Syntheses and structural characterisations

MPS-Authors

/persons/resource/persons58744

Lehmann, C.
Department of Chemistry, The University of Durham, Science Site, South Road, Durham DH1 3LE, UK;
Service Department Lehmann (EMR), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

公開されているフルテキストはありません

付随資料 (公開)

There is no public supplementary material available

引用

Barker, J., Barr, D., Barnett, N., Clegg, W., Cragg-Hine, I., Davidson, M., Davies, R., Hodgson, S., Howard, J., Kilner, M., Lehmann, C., Lopez-Solera, I., Mulvey, R., Raithby, P., & Snaith, R. (1997). Lithiated amidines: Syntheses and structural characterisations. Journal of the Chemical Society, Dalton Transactions, (6), 951-955. doi:10.1039/a605849c.

引用: https://hdl.handle.net/11858/00-001M-0000-0024-B8E6-A

要旨

The reaction of a toluene solution of PhNC(Ph)NHPh (N,N'-diphenylbenzamidine) with n-butyllithium gave the toluene-solvated amidinolithium compound {Li[PhNC(Ph)NPh]}_n. Similarly the same reaction performed in the presence of the Lewis-base donors (Me₂N)₃PO (hmpa), Me₂N(CH₂)₂NMe₂ (tmen) or [Me₂N(CH₂)₂]₂ (pmdien) yielded the am{Li[PhNC(Ph)NPh·hmpa]}₂ 2, {Li[PhNC(Ph)NPh]·tmen} 3 and {Li[PhNC(Ph)NPh]. pmdien} 4 respectively. In addition the reaction of a toluene solution of the related amidine PhNC(Me)NHPh (N,N′-diphenylacetamidine) with LiBu in the presence of hmpa afforded {Li[PhNC(Me)NPh]·hmpa}₂ 5. The solid-state structures of 2-5, which have been resolved by single-crystal X-ray diffraction methods, show both similarities and differences The complexes 3 and 4, which contain the di- and tri-dentate ligands tmen and pmdien respectively, are monomeric, whilst use of the unidentate Lewis base hmpa results in dimers 2 and 5. However, the way in which dimerisation is achieved differs. The co-ordination geometry about the lithium cation is clearly influenced by the choice of donor and as such shows how change in the denticity of the donor ligand utilised can have a significant effect on the solid-state structure of the system.