Fourier 300 mhz instrument
Manufactured by Bruker
Sourced in United States
The Fourier 300 MHz instrument is a nuclear magnetic resonance (NMR) spectrometer that operates at a frequency of 300 MHz. It is designed to analyze the structure and composition of chemical compounds through the detection and measurement of nuclear magnetic resonances.
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4 protocols using fourier 300 mhz instrument
1
NMR Spectroscopy of Organic Compounds
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1h NMR and 13C NMR spectra were recorded on a Bruker Fourier 300 MHz instrument (Bruker Corporation, Billerica, MA, USA), operating at 300 MHz for 1h NMR and at 75 MHz for 13C NMR in deuterated dimethyl sulfoxide (DMSO-d6), with tetramethylsilane used as internal standard. Data were reported as follows: a chemical shift in ppm (δ), multiplicity (s = singlet, brs = broad singlet, d = doublet, t = triplet, q = quartet, m= multiplet, dd = double doublet, td = triple doublet, ddd = doublet of doublets), signal/atom attribution, and the coupling constant (Hz). For 13C NMR data, the order is as follows: chemical shifts and signal/atom attribution; Cq = quaternary carbon.
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2
Purification and Characterization Protocol
3
Melting Point and Spectral Analysis
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Melting points were determined on an Electrothermal 9100 (Bibby Scientific Ltd., Stone, UK), in open capillaries.
The structures of the original and intermediate compounds were determined by IR, 1H-NMR and 13C-NMR spectral analysis. Chemical shifts for hydrogen and carbon atoms have also been confirmed by 2D-NMR experiments.
IR spectra were recorded on a Bruker Vertex 70 FT-IR spectrometer (Bruker Corporation, Billerica, MA, USA).
1H-NMR and 13C-NMR spectra were recorded in deuterated chloroform (CDCl3) or DMSO-d6, on a Bruker Fourier 300 MHz instrument (Bruker Corporation, Billerica, MA, USA) operating at 300.0 MHz for 1H-NMR and at 75.0 MHz for 13C-NMR and on a Bruker Avance III 500 MHz instrument (Bruker Corporation, Billerica, MA, USA) operating at 500 MHz for proton and 125 MHz for carbon).
The structures of the original and intermediate compounds were determined by IR, 1H-NMR and 13C-NMR spectral analysis. Chemical shifts for hydrogen and carbon atoms have also been confirmed by 2D-NMR experiments.
IR spectra were recorded on a Bruker Vertex 70 FT-IR spectrometer (Bruker Corporation, Billerica, MA, USA).
1H-NMR and 13C-NMR spectra were recorded in deuterated chloroform (CDCl3) or DMSO-d6, on a Bruker Fourier 300 MHz instrument (Bruker Corporation, Billerica, MA, USA) operating at 300.0 MHz for 1H-NMR and at 75.0 MHz for 13C-NMR and on a Bruker Avance III 500 MHz instrument (Bruker Corporation, Billerica, MA, USA) operating at 500 MHz for proton and 125 MHz for carbon).
4
NMR Spectroscopy Analysis of Organic Compounds
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The 1H NMR and 13C NMR spectra were recorded in deuterated dimethyl sulfoxide (DMSO-d6) on a Bruker Fourier 300 MHz instrument (Bruker Corporation, Billerica, MA, USA), operating at 300 MHz for 1H NMR, and 75 MHz for 13C NMR.
In NMR spectra, the chemical shifts were recorded as δ values, in parts per million (ppm), relative to tetramethyl silane as internal standard, and coupling constants (J) in Hertz. The standard abbreviations that indicate the multiplicity of signals are s (singlet), d (doublet), m (multiplet), dd (double doublet), td (triple doublet), bs (broad singlet), and bd (broad doublet). The 1H NMR data are presented in the following order: chemical shifts, multiplicity, signal/atom attribution and the coupling constants. For 13C NMR data, the order is as follows: chemical shifts and signal/atom attribution.
In NMR spectra, the chemical shifts were recorded as δ values, in parts per million (ppm), relative to tetramethyl silane as internal standard, and coupling constants (J) in Hertz. The standard abbreviations that indicate the multiplicity of signals are s (singlet), d (doublet), m (multiplet), dd (double doublet), td (triple doublet), bs (broad singlet), and bd (broad doublet). The 1H NMR data are presented in the following order: chemical shifts, multiplicity, signal/atom attribution and the coupling constants. For 13C NMR data, the order is as follows: chemical shifts and signal/atom attribution.
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