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1H NMR spectra (D2O, 20 °C, pH 6) of Re(CO)3(l-ASMA) maintained at 20 °C (I) and after heating at 70 °C for 3 d (II) are shown (detailed in Table 2). The signals from exo-Re(CO)3(l-ASMA) (2A) and endo-Re(CO)3(l-ASMA) (2B) can be deconvoluted by comparing the two spectra. Selected signals from 2A (I) and 2B (II, marked with an *) are labeled to highlight significant differences.
