NMR Determination of the Rotational Barrier in N,N-dimethylacetamide by ufq12259

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									NMR Determination of the Rotational Barrier in N,N-dimethylacetamide
Name_________________________________
                                                         o
∆νo      ________________ sec-1                     (∆νA)1/              ________________ sec-1
                                                              2
                         e              ∆νe                                         Used Eq #
                (∆νA)1/                                  Approx. k (sec-1)
 T(°C)                       2          See note*




                                                                                    Eq. 11 Coalescence




                                   e
* You will use the (∆νA)1/ or ∆νe value, but not both, for a given calculation. List only the
                          2
value that you used (you don’t need to list both).

                                                                                                  fit
                    -1
 T(°C)         k (sec )          T(K)         1/T                 ln k       fit ln k   ln k/T    ln(k/T)




Attach Both Plots

Plot ln k:         Slope          ______________ ± ________________ units _______________
                   Intercept ______________ ± ________________ units _______________
         Ea        _______________ ± ________________ units _______________
         A         _______________ ± ________________ units _______________

Plot ln k/T:       Slope          ______________ ± ________________ units _______________
                   Intercept ______________ ± ________________ units _______________
         ∆rH≠ _______________ ± ________________ units _______________
         ∆rS≠      _______________ ± ________________ units _______________
         ∆rG≠ _______________ ± ________________ units _______________

								
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