Synthesis of β-diketiminato calcium silylamides and their reactions with triethylaluminium

M R Crimmin, Michael Hill, P B Hitchcock, Mary F Mahon

Research output: Contribution to journalArticlepeer-review

31 Citations (SciVal)


Reaction of the beta-diketiminato calcium amide [{ArNC(Me)CHC(Me)NAr}Ca{N(SiMe3)(2)}(OEt2)] (Ar = 2,6-di-iso-propylphenyl) with triethylaluminium yields a novel calcium aluminate complex, [kappa(3)-{ArNC(Me)C(AlEt3)HC(Me)NAr}Ca{Et4Al}], in which coordination at calcium is provided by not only bridging interactions with the ethyl groups of the aluminate anion but also a tripodal kappa(3)-N,N,C-coordinated ligand derived from further reaction of the 'spectator' beta-diketiminate ligand with triethylaluminium. In the solid state, this compound exists as a 1 : 1 mixture of coordination isomers in which the Et4Al anion binds to calcium via either mu(2)- or mu(3)-coordination modes. Although persistent, and rapidly interconverting, at room temperature in solution, variable temperature NMR studies suggest that these two isomers undergo dissociative loss of triethylaluminium from the diketiminate ligand at low temperature.
Original languageEnglish
Pages (from-to)1572-1578
Number of pages7
JournalNew Journal of Chemistry
Issue number8
Publication statusPublished - Aug 2010


Dive into the research topics of 'Synthesis of β-diketiminato calcium silylamides and their reactions with triethylaluminium'. Together they form a unique fingerprint.

Cite this