1H-NMR解析题目
Interactive proton 1H NMR spectrum of ethanol showing equivalent protons with 3D model of molecule and 2D structure
Here, we report the use of a relatively fast 2D HSQC NMR experiment performed on a 500 MHz spectrometer fitted with a BBFO+ probe to obtain high quality spectra. The use of the developed protocol to study the selective modification of the β–β linkage in Kraft lignin is also reported....
Here, we report the use of a relatively fast 2D HSQC NMR experiment performed on a 500 MHz spectrometer fitted with a BBFO+ probe to obtain high quality spectra. The use of the developed protocol to study the selective modification of the 脽-脽 linkage in Kraft lignin is also reported....
IR spectra were performed on a Mattson 5000 FT-IR spectrometer (Fremont, CA, USA) in KBr disks at the Faculty of Pharmacy, Mansoura University. 1H and 13C-NMR spectra were obtained using a Bruker 400 MHz spectrometer (Billerica, MA, USA) and DMSO-d6 as solvent. Mass spectra (m/z) ...
13C-NMR Spectroscopy Figure 1 shows the representative 1D 13C-NMR spectra of Chinese red cooking (CR), Japanese shoyu (JS), Singapore Kikkoman (SK) and Taiwan light (TL) soy sauces. Although no clear and apparent differences were observed in the overall pattern of the spectra, distinct ...