252980-63-5Relevant academic research and scientific papers
Four independent structures of a pentacoordinate silicon species at different points on the Berry pseudorotation pathway
Bassindale, Alan R.,Sohail,Taylor, Peter G.,Korlyukov, Alexander A.,Arkhipov, Dmitry E.
, p. 3274 - 3276 (2010)
A new pentacoordinate silicon species containing two chelating ligands has been synthesized. The structures of four independent cations of the same compound correspond to different points on the Berry pseudorotation pathway. The percentage of square planar character varies between 19% and 40%.
Modelling nucleophilic substitution at silicon in solution, using hypervalent silicon compounds based on 2-pyridones
Bassindale, Alan R.,Borbaruah, Moheswar,Glynn, Simon J.,Parker, David J.,Taylor, Peter G.
, p. 2099 - 2109 (2007/10/03)
A novel method for performing structure correlations in solution is described. Examination of how the 13C chemical shifts of the ring carbons of substituted 2-pyridones change on complexation of the oxygen with silicon has enabled the % Si-O bond formation to be determined in solution for a number of pentacoordinate silicon species with 2-pyridones as ligands. The % pentacoordination in these complexes has been determined from the 29Si chemical shift using model compounds for the tetracoordinate and pentacoordinate limiting cases. Correlation of the % Si-O bond formation with % pentacoordination enables the pathway for substitution at silicon to be mapped in solution. The generality of these techniques is examined using a series of related aromatic ligands.
