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Nuclear magnetic resonance chemical shift-based methods

In addition, nuclear magnetic resonance (NMR) and infrared methods have been widely used. For example, the chemical shift of MA in benzene or acetone is concentration as well as temperature dependent, Silber et have thus determined equilibrium constants for the complexes. Also used successfully is analytical calorimetry. In Tables 6.10 and 6.11 are shown data for MA-benzene and MA-acetone complexes, respectively. Comparisons with those results from NMR studies are given. Obviously good correlations are obtained. Based on their data, 25% of MA (0.044 mole fraction) in benzene is present as complex whereas that number is 55% for MA (0.25 mole fraction) in ace tone. [Pg.209]

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See also in sourсe #XX -- [ Pg.99 ]



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