3.3.6. Determination of 13C-NMR and 1H-NMR Spectroscopy

First, 80 mg of the samples was dissolved in 0.5 mL of DMSO-d6. Then, all NMR spectra were recorded on a Bruker Avance III 500-MHz spectrometer (Fällanden, Switzerland) equipped with a φ5 mm broad-band fluorine observation (BBFO) probe at a temperature of 25 °C. The ¹³C NMR spectra were recorded in the FT mode at 100.6 MHz with the following conditions: 1.75-s pulse delay and 0.94-s reception time, with the data points collected at 32 kbit and after accumulating 20,000 scans. The ¹H-NMR spectrum was recorded with the following conditions: 4.3-s pulse delay and 0.74-s acquisition time, with the data points collected at 32 kbit and after the accumulation of 500 scans.