1H NMR spectra were recorded on a JNM-ECS 400 MHz spectrometer (JEOL, Tokyo, Japan operated in the Fourier transform mode. Dimethyl sulfoxide (DMSO-d6), and deuterated chloroform (CDCl3) were used as the solvents, respectively.
Jnm ecs 400 mhz spectrometer
Manufactured by JEOL
Sourced in Japan
The JNM-ECS 400 MHz spectrometer is a nuclear magnetic resonance (NMR) instrument manufactured by JEOL. It operates at a frequency of 400 MHz and is designed for high-resolution NMR spectroscopy. The core function of this spectrometer is to analyze the structure and properties of chemical compounds by detecting the magnetic properties of their atomic nuclei.
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Lab products found in correlation
2 protocols using jnm ecs 400 mhz spectrometer
1
NMR Spectroscopy of Organic Compounds
2
Synthesis and Characterization of Disilylamines
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Disilylamines (1a–1g ,10 (link)1h–1j ,11 (link) and 1k–1n (10 (link))) and VO(TEA)8 (link) were prepared
according to the literature method. The other catalysts and solvents
were purchased from commercial sources and further purified by the
standard methods if necessary. 1H NMR, 13C NMR, 19F NMR, and 29Si NMR spectra were recorded in CDCl3, DMSO-d6, CD3OD, or
CD3CN on a JEOL JNM-ECS 400 MHz spectrometer. Chemical
shifts of 1H NMR and 13C NMR spectra were given
in δ (ppm) relative to the residual solvent signal as an internal
standard. Chemical shifts of 29Si{1H} NMR spectra
were reported relative to the external reference Me4Si
(δ = 0 ppm). Chemical shifts of 19F{1H}
NMR spectra were referenced to an external PhCF3 (δ
= −63.7 ppm). High-resolution mass spectroscopy (HRMS) was
performed on a JEOL JMS-700 spectrometer. The analysis of the chiral
urea product2g was carried out using HPLC (Chiralpak
IA, hexane/CHCl3/EtOH = 8:2:1, flow 0.5 mL/min, 254 nm).
according to the literature method. The other catalysts and solvents
were purchased from commercial sources and further purified by the
standard methods if necessary. 1H NMR, 13C NMR, 19F NMR, and 29Si NMR spectra were recorded in CDCl3, DMSO-d6, CD3OD, or
CD3CN on a JEOL JNM-ECS 400 MHz spectrometer. Chemical
shifts of 1H NMR and 13C NMR spectra were given
in δ (ppm) relative to the residual solvent signal as an internal
standard. Chemical shifts of 29Si{1H} NMR spectra
were reported relative to the external reference Me4Si
(δ = 0 ppm). Chemical shifts of 19F{1H}
NMR spectra were referenced to an external PhCF3 (δ
= −63.7 ppm). High-resolution mass spectroscopy (HRMS) was
performed on a JEOL JMS-700 spectrometer. The analysis of the chiral
urea product
IA, hexane/CHCl3/EtOH = 8:2:1, flow 0.5 mL/min, 254 nm).
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