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. 2021 Oct 28;11(54):34086–34094. doi: 10.1039/d1ra05525a

Fig. 3. Aromatic region of the 1H NMR spectra (400 MHz, CDCl3, 273 K) of (a) Re[TpCH3PC-3-CHO](O) and (b) Re[TpCH3PC-3-17-(CHO)2](O). Note the different numbers of β protons in the two complexes. Note also that the most downfield singlet has been tacitly assigned as the formyl proton.

Fig. 3