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World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.


Synthesis, characterisation and a theoretical investigation of the formation of lithium dialkylaluminium amides

Clegg, W and Liddle, S T and Henderson, K W and Keenan, F E and Kennedy, A R and McKeown, A E and Mulvey, R E (1999) Synthesis, characterisation and a theoretical investigation of the formation of lithium dialkylaluminium amides. Journal of Organometallic Chemistry, 572 (2). pp. 283-289. ISSN 0022-328X

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Reaction of the pre-formed crystalline amides [(PhCH2)(2)NLi] and [Me2AlN(CH2Ph)(2)] in the presence of pyridine results in the formation of the mixed metal complex [Me2Al{(PhCH2)(2)N}(2)Li . pyr] 1. Ab initio molecular orbital calculations indicate formation of the bimetallic product is energetically favourable. Using single crystal X-ray analysis for 1 and the pyridine solvate [{(PhCH2)(2)NLi . pyr}(2)] 7, in combination with theoretical calculations, the possible driving forces for the reaction are discussed. A major contributing factor in the stabilisation of the bimetallic compound was found to be a reduction in steric crowding in the mixed metal base compared to the homometallic dialkylaluminium amide. In addition, complex 1 shows significant benzyl to lithium interactions which contribute to the overall bonding. Such interactions are unusual in that donor solvent is present as competing complexant.