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Bassindale, Alan R.; Baukov, Yuri I.; Borbaruah, Moheswar; Glynn, Simon J; Negrebetsky, Vadim V.; Parker, David J.; Taylor, Peter G. and Turtle, Robert
(2003).
DOI: https://doi.org/10.1016/S0022-328X(03)00009-3
Abstract
Solution 1JSi---F and 2JC---F NMR coupling constant and 19F-NMR chemical shift data have been analysed in a series of pentacoordinate silyl monofluoride complexes used to model nucleophilic substitution at silicon. Patterns in the data reveal strong correlations between both coupling constants and 19F-NMR chemical shifts and the degree of substitution displayed by each. Excellent correlation is obtained between the new data and our previous 13C- and 29Si-NMR studies to further confirm the validity of the NMR technique for structural correlation in solution. By pooling the X-ray crystal structures of a large number of compounds of this class from both our own results and the literature we are able to provide a possible explanation for some of the trends in the NMR data we observe in solution.