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A new class of linked-bis(N,N′-dialkylamidinate) ligand: Applications in the synthesis of bimetallic aluminium complexes

A new class of linked-bis(N,N′-dialkylamidinate) ligand: Applications in the synthesis of bimetallic aluminium complexes
A new class of linked-bis(N,N′-dialkylamidinate) ligand: Applications in the synthesis of bimetallic aluminium complexes

The 1,4-benzenebis(N,N′-dialkylamidine) compounds, 1,4-C6H4[C{NR}{NHR}]2 (1, R = Cy; 2, R =iPr) were synthesised via addition of a stoichiometric amount of water to the 1,4-benzenebis(amidinate) species, generated from the in situ reaction between 1,4-Li2C6H4 and the appropriate carbodiimide. Alternatively, the neutral silylated derivatives, 1,4-C6H4[C{NR}{N(SiMe3)R}]2 (3, R = Cy; 4, R = iPr) are synthesised by quenching the 1,4-benzenebis(amidinate) with excess Me3SiCl. Structural characterisation of selected examples are reported, showing that the neutral NH compounds are monomeric with a E-syn:E-syn arrangement of the Nalkyl substituents, while in the silylated derivative 4, the E-anti:E-anti form is present in the solid-state. Synthesis of the bimetallic aluminium compounds revealed a monomeric complex with a perpendicular arrangement of the amidinate units with respect to the C6-group.

Aluminium, Amidinate, Amidine, Bimetallic, Crystal structures, Linked, Silylated
0022-328X
178-187
Grundy, Joanna
0bc72187-8dce-41fc-b809-93a6adbe0980
Coles, Martyn P.
4cb5ee08-daf9-4b58-9627-61732e0a818b
Hitchcock, Peter B.
4c0fe381-c3e8-452c-a284-fe14acd3b748
Grundy, Joanna
0bc72187-8dce-41fc-b809-93a6adbe0980
Coles, Martyn P.
4cb5ee08-daf9-4b58-9627-61732e0a818b
Hitchcock, Peter B.
4c0fe381-c3e8-452c-a284-fe14acd3b748

Grundy, Joanna, Coles, Martyn P. and Hitchcock, Peter B. (2002) A new class of linked-bis(N,N′-dialkylamidinate) ligand: Applications in the synthesis of bimetallic aluminium complexes. Journal of Organometallic Chemistry, 662 (1-2), 178-187. (doi:10.1016/S0022-328X(02)01922-8).

Record type: Article

Abstract

The 1,4-benzenebis(N,N′-dialkylamidine) compounds, 1,4-C6H4[C{NR}{NHR}]2 (1, R = Cy; 2, R =iPr) were synthesised via addition of a stoichiometric amount of water to the 1,4-benzenebis(amidinate) species, generated from the in situ reaction between 1,4-Li2C6H4 and the appropriate carbodiimide. Alternatively, the neutral silylated derivatives, 1,4-C6H4[C{NR}{N(SiMe3)R}]2 (3, R = Cy; 4, R = iPr) are synthesised by quenching the 1,4-benzenebis(amidinate) with excess Me3SiCl. Structural characterisation of selected examples are reported, showing that the neutral NH compounds are monomeric with a E-syn:E-syn arrangement of the Nalkyl substituents, while in the silylated derivative 4, the E-anti:E-anti form is present in the solid-state. Synthesis of the bimetallic aluminium compounds revealed a monomeric complex with a perpendicular arrangement of the amidinate units with respect to the C6-group.

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More information

Accepted/In Press date: 17 September 2002
e-pub ahead of print date: 21 October 2002
Published date: 15 November 2002
Keywords: Aluminium, Amidinate, Amidine, Bimetallic, Crystal structures, Linked, Silylated

Identifiers

Local EPrints ID: 426193
URI: http://eprints.soton.ac.uk/id/eprint/426193
ISSN: 0022-328X
PURE UUID: 7d5ab153-8515-4e41-969a-f2f09f8ef5fa

Catalogue record

Date deposited: 16 Nov 2018 17:30
Last modified: 16 Nov 2018 17:30

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