Kennedy, Alan and Klett, Jan and Robertson, Stuart and Mulvey, Robert (2011) N-heterocyclic-carbene-induced monomerization of sterically encumbered dialkylmagnesium and dialkylmanganese polymers. European Journal of Inorganic Chemistry (30). pp. 4675-4679. ISSN 1434-1948Full text not available in this repository. (Request a copy from the Strathclyde author)
The sterically encumbered polymeric dialkyl complexes [M(CH2SiMe3)(2)](infinity) [M = Mg, Mn-II] were deaggregated by the potent two-electron sigma-donor, 1,3-bis(2,6-diisopropylphenyl)-imidazol-2-ylidene (IPr), to yield the first examples of the monomeric three-coordinate [M(CH2SiMe3)(2)]center dot donor complexes [M = Mg (1); Mn (2)]. Similarly, monomeric three-coordinate species M[CH(SiMe3)(2)](2)center dot IPr [M = Mg, (3); Mn, (4)] were obtained from the bulkier disilyl-substituted alkyl [CH-(SiMe3)(2)] congeners M[CH(SiMe3)(2)](2)center dot ether by displacement of the ether by IPr. Complexes 1-4, which represent rare examples of N-heterocyclic-carbene-stabilized dialkylmagnesium and dialkylmanganese species, were crystallographically characterized; the diamagnetic magnesium complexes were also characterized in an arene solution by H-1 and C-13 NMR spectroscopy.
|Keywords:||alkyl ligands, magnesium, manganese, N-heterocyclic carbenes, structure elucidation, tertiary phosphine adducts, structural characterization, alkyl complexes, x-ray, ligands, potassium, Chemistry, Inorganic Chemistry|
|Subjects:||Science > Chemistry|
|Department:||Faculty of Science > Pure and Applied Chemistry|
|Depositing user:||Pure Administrator|
|Date Deposited:||16 Jan 2012 15:36|
|Last modified:||26 Aug 2016 02:34|