Spectroscopy
Nuclear Magnetic Resonance (NMR) Spectroscopy
NMR spectroscopy provides structural and chemical-environment information for molecules in suitable solution or solid-state experiments.
Nuclear Magnetic Resonance observes atomic nuclei in a magnetic field after radiofrequency excitation. RNDgrid coordinates nucleus, solvent, concentration, experiment type, temperature, and sample compatibility with partner facilities. A clear structural question is essential because one-dimensional proton NMR, carbon NMR, and multidimensional experiments differ greatly in time and information.
When this method is useful
- Organic compounds, purified products, reaction mixtures, polymers, metabolites, and selected materials
- Identity confirmation, structure elucidation, purity assessment, reaction monitoring, and chemical-environment comparison
- Projects requiring proton, carbon, or advanced correlation experiments
What the report can include
- Spectrum with chemical shift, intensity, and acquisition information
- Optional integration, peak assignment, processing, or specialist interpretation within scope
- Raw data when agreed for independent processing
Sample preparation and scoping
- Provide expected structure, molecular weight, solubility, available amount, purity, and suitable deuterated solvent.
- Avoid particulate material, incompatible tubes, reactive mixtures, or excessive paramagnetic impurities.
- State whether exchangeable protons, quantitative work, variable temperature, or special nuclei are important.
Limitations to consider
- Sensitivity depends strongly on nucleus, concentration, molecular behavior, field strength, and experiment.
- Mixtures, broad peaks, exchange, paramagnetic species, and poor solubility complicate interpretation.
- Definitive structure work may require multiple experiments and complementary MS or chromatography.
Capabilities, detection limits, accreditation scope, and turnaround vary by method and partner laboratory. Confirm the final scope in the quotation before sending samples.
Questions to answer before booking
- Which nucleus and experiment answer the structural question?
- What concentration, solvent, volume, and purity are available?
- Is routine acquisition enough, or is expert assignment and interpretation required?
Related methods
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