Scandium terephthalate

Figure 2.31 The scandium terephthalate structure is an example of a MOF that consists of isolated MOs octahedra linked by dicarboxylate ligands. It has a high adsorption capacity for small molecules such as H2 and N2.

X-ray diffraction can readily be applied in situ to follow struetural changes associated with thermal transformations, cation migrations and crystallisation from solution. One simple example of the first application is to determine the temperature at which a material loses crystallinity, as illustrated for the scandium terephthalate Sc2(02CC6H4C02)3 in Figure 3.6. Another application is to measure the kinetics of cation migration throughout zeolites, as previously described for Na,Ni-Y. 

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