Synthesis and structural characterisation of monomeric Group 14 metal dialkyls MR2 [R = CPh(SiMe3)(C5H4N-2) or CH(SiMe3)(C9H6N-8); M = Ge, Sn or Pb]
- 1 January 1997
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 22,p. 4301-4306
- https://doi.org/10.1039/a705206e
Abstract
A series of heavier main Group 14 metal dialkyls MR2 [R = R1 = CPh(SiMe3)(C5H4N-2), M = Ge 1 or Sn 2; R = R2 = CH(SiMe3)(C9H6N-8), M = Sn 3 or Pb 4] has been synthesized by the reaction of 2 equivalents of the appropriate lithium reagents LiR(tmen) (tmen = Me2NCH2CH2NMe2) with GeCl2(diox) (diox = 1,4-dioxane), SnCl2 or Pb[N(SiMe3)2]2 in diethyl ether solution. Crystal structure analysis has shown that compounds 1–4 are monomeric with the N-functionalized alkyl ligands R1 or R2 bonded to the metal centre in a C,N-chelate fashion and the geometry around the metal is pyramidal, consistent with a stereoactive lone pair at the metal.Keywords
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