Question: I ( 19 F) = ; I ( 183 W) = , 14% abundant (no other NMR active isotope of W) (ii) (a) The 19F

I (¹⁹F) = ; I (¹⁸³W) = , 14% abundant (no other NMR active isotope of W)

I (19F) = ; I (183W) = , 14% abundant (no other

(ii) (a) The 19F NMR spectrum of the 183W-labelled complex, 183 WOF4 (A) shows a 1:1 doublet. Account for the observed pattern and draw a structure of the complex which is consistent with the data. [3 marks] (b) Sketch the 19F NMR spectrum you would predict for a sample of (A) in which the W is unlabelled i.e. WOF4, clearly indicating the relative intensities of the signals on your spectrum. [2 marks]

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