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the claim
NMR chemical shifts can be defined relative to different reference compounds
the verdict
COMMON KNOWLEDGE
no citation needed for this one
refutedsupported
the weight of evidence
no sources on either side

The use of reference compounds (such as TMS) to define NMR chemical shifts is a fundamental and standard practice in spectroscopy, requiring no citation.

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The analysis

The claim that NMR chemical shifts can be defined relative to different reference compounds is a standard, fundamental fact of analytical chemistry and spectroscopy (e.g., referencing to TMS, DSS, or solvent signals depending on the nucleus and conditions). According to the instructions, a trivially true statement of direct observation or established definition is classified as COMMON_KNOWLEDGE, requiring no citations.

Everything we examined (12)
  1. Beyond Deshielding: NMR Evidence of Shielding in Hydridic and Protonic Hydrogen Bonds.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  2. Exploring the Frontiers of Computational NMR: Methods, Applications, and Challenges.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  3. Benchmark of Density Functional Theory in the Prediction of <sup>13</sup>C Chemical Shielding Anisotropies for Anisotropic Nuclear Magnetic Resonance-Based Structural Elucidation.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  4. NMR-based metabolomics: Where are we now and where are we going?peer-reviewedno side takennot shown: read and judged not to bear on this claim
  5. Modern Quantum Chemistry Methodology for Predicting &lt;sup&gt;31&lt;/sup&gt;P Nuclear Magnetic Resonance Chemical Shifts.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  6. &lt;sup&gt;99&lt;/sup&gt;Ru Solid-State Nuclear Magnetic Resonance Spectroscopy of Organometallic Compounds: Linking Nuclear Magnetic Resonance Parameters with Metal-Ligand Bonding.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  7. Securing the Future of NMR Metabolomics Reproducibility: A Call for Standardized Reporting.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  8. Enhancing both the Intensities and Resolution of &lt;sup&gt;19&lt;/sup&gt;F NMR Spectra of PFAS through Band-Selective Homonuclear Decoupling.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  9. A longitudinal &lt;sup&gt;1&lt;/sup&gt;H NMR-based urinary metabolomics dataset in a birth cohort for childhood atopic diseases.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  10. Probing the &lt;sup&gt;11&lt;/sup&gt;B Quadrupolar and Chemical Shielding Tensors in a Pair of Organoboron Enantiomers.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  11. Residual Chemical Shift Anisotropies in the Structure Determination of Small Molecules.peer-reviewedno side takennot shown: read and judged not to bear on this claim
  12. PanMETAI - a high performance tabular foundation model for accurate pancreatic cancer diagnosis via NMR metabolomics.peer-reviewedno side takennot shown: read and judged not to bear on this claim
The paper trail · every fact has a biography
first checked05 Aug 2026
judged → COMMON KNOWLEDGE · 9505 Aug 2026
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