Values of the coefficients for the three lines with standard error (SE), residual standard error (RSE), R² and adjusted R² are given in Table below. This equation (y = ax+b) will be used to correct the integrated signals for the digested MAF-6 samples. For the three replicates, we calculated the ratio of EtIm/MA by integration of the aliphatic triplet and normalising this by the number of protons and dividing by the integration of MA, again normalised for the number of protons. The result is given in the first column of Table . After correction by the calibration of Figure and Table , and multiplying by the number of moles of MA, this resulted in 0.00762 ± 0.00002 mmol EtIm per mg prepared MAF-6. From TGA we can calculate that in 1 mg prepared MAF-6 there is 0.0038 mol ZnO/Zn 2+ . Combining the qNMR and TGA data using the equations in the Method section we get a stoichiometry of 1:1.97 Zn:EtIm, which is close to the theoretical 1:2 ratio and corresponds to a molar percent of 1.5 % missing linkers.