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Intensity, a. u.
Chapter 3 51
and asymmetric COO - vibrations at 1425 and 1541 cm -1 , respectively, match well with the
reported values (Figure 7.10). [82, 208]
Cu-BTC_sim
Cu-BTC_ht
5
Ru II, III -BTC
8 12 16 20 24 28
2, degree
Figure 3.18. PXRD patterns of the activated Ru II,III -BTC 1 and sample 5 in comparison with
simulated patterns of the as-synthesized (Cu-BTC_sim) and activated Cu-BTC (Cu-BTC_ht).
Consequently, degassed solvents (H2O and acetic acid) and inert conditions (Ar
atmosphere) were utilized to synthesize Ru-MOF 5. The PXRD patterns of the activated
mixed-valence Ru II,III -BTC sample obtained in our earlier reports [82, 208] exhibit a little shift
of the peaks in comparison with the simulated PXRD patterns of the Cu-BTC_sim, although
the overall structural integrity is fully preserved. This slight shift stem mainly from the
substitution of the copper-ions by ruthenium-ions (which are of different radii) at the PW
SBUs of the MOF. The PXRD patterns of the prepared here activated sample 5 are in a good
accordance with respective PXRD data of both reported earlier Ru II,III -BTC (Ru-MOF 1)
and Cu-BTC_sim(Figure 3.18), providing a good indication for the phase-purity of the
prepared solid. Furthermore, the IR spectra of the synthesized sample 5 matches well