NMR spectroscopy
E913571
NMR spectroscopy is an analytical technique that uses the magnetic properties of atomic nuclei to determine the structure, dynamics, and environment of molecules.
All labels observed (4)
| Label | Occurrences |
|---|---|
| NMR spectroscopy canonical | 2 |
| HRMAS NMR | 1 |
| Nuclear Magnetic Relaxation | 1 |
| Nuclear Magnetic Resonance: Applications to Organic Chemistry | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11244723 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: NMR spectroscopy Context triple: [Rabi oscillation, usedIn, NMR spectroscopy]
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A.
NMR
NMR is a historic narrow-gauge railway in the Nilgiri Hills of Tamil Nadu, India, renowned for its scenic mountain route and UNESCO World Heritage status.
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B.
Principles of Magnetic Resonance
Principles of Magnetic Resonance is a foundational textbook that systematically explains the theory and applications of magnetic resonance phenomena, particularly nuclear magnetic resonance (NMR), for advanced students and researchers in physics and chemistry.
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C.
BMRB
BMRB (Biological Magnetic Resonance Data Bank) is a public repository that archives and distributes NMR spectroscopic data on biological macromolecules.
-
D.
Fourier transform infrared spectroscopy
Fourier transform infrared spectroscopy is an analytical technique that measures how a sample absorbs infrared light across a wide range of wavelengths to determine its molecular composition and structure.
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E.
Karplus equation for NMR coupling constants
The Karplus equation for NMR coupling constants is an empirical relationship that links three-bond scalar coupling values between nuclei to the dihedral angle between them, enabling the determination of molecular conformations from NMR data.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: NMR spectroscopy Target entity description: NMR spectroscopy is an analytical technique that uses the magnetic properties of atomic nuclei to determine the structure, dynamics, and environment of molecules.
-
A.
NMR
NMR is a historic narrow-gauge railway in the Nilgiri Hills of Tamil Nadu, India, renowned for its scenic mountain route and UNESCO World Heritage status.
-
B.
Principles of Magnetic Resonance
Principles of Magnetic Resonance is a foundational textbook that systematically explains the theory and applications of magnetic resonance phenomena, particularly nuclear magnetic resonance (NMR), for advanced students and researchers in physics and chemistry.
-
C.
BMRB
BMRB (Biological Magnetic Resonance Data Bank) is a public repository that archives and distributes NMR spectroscopic data on biological macromolecules.
-
D.
Fourier transform infrared spectroscopy
Fourier transform infrared spectroscopy is an analytical technique that measures how a sample absorbs infrared light across a wide range of wavelengths to determine its molecular composition and structure.
-
E.
Karplus equation for NMR coupling constants
The Karplus equation for NMR coupling constants is an empirical relationship that links three-bond scalar coupling values between nuclei to the dihedral angle between them, enabling the determination of molecular conformations from NMR data.
- F. None of above. chosen
Statements (95)
| Predicate | Object |
|---|---|
| instanceOf |
analytical technique
ⓘ
physical chemistry technique ⓘ spectroscopic method ⓘ |
| appliedIn |
biochemistry
ⓘ
food science ⓘ metabolomics research ⓘ organic chemistry ⓘ petroleum industry ⓘ pharmaceutical analysis ⓘ polymer science ⓘ structural biology ⓘ |
| basedOn | nuclear magnetic resonance ⓘ |
| commonlyUsesNucleus |
13C
ⓘ
15N ⓘ 19F ⓘ 1H ⓘ 31P ⓘ |
| dataType |
NMR spectrum
ⓘ
time-domain FID ⓘ |
| detects |
chemical environment of nuclei
ⓘ
local electronic structure ⓘ through-bond couplings ⓘ through-space interactions ⓘ |
| hasAdvantage |
high structural information content
ⓘ
non-destructive analysis ⓘ quantitative accuracy ⓘ |
| hasInstrumentComponent |
RF receiver
ⓘ
RF transmitter ⓘ gradient coils ⓘ probe ⓘ sample spinner ⓘ shim coils ⓘ superconducting magnet ⓘ temperature control unit ⓘ |
| hasKeyConcept |
Fourier transform
ⓘ
J-coupling ⓘ Larmor frequency ⓘ NOE ⓘ chemical shift ⓘ chemical shift anisotropy ⓘ decoupling ⓘ deshielding ⓘ integration ⓘ line broadening ⓘ lock signal ⓘ multiplicity ⓘ pulse sequence ⓘ reference compound ⓘ relaxation delay ⓘ relaxation time ⓘ shielding ⓘ shimming ⓘ spin-lattice relaxation ⓘ spin-spin relaxation ⓘ spin–spin coupling ⓘ |
| hasLimitation |
low sensitivity for some nuclei
ⓘ
overlapping signals in complex mixtures ⓘ |
| hasTechnique |
COSY
ⓘ
DEPT ⓘ HMBC ⓘ HSQC ⓘ NOESY ⓘ T1 relaxation measurement ⓘ T2 relaxation measurement ⓘ TOCSY ⓘ diffusion-ordered spectroscopy ⓘ heteronuclear decoupling ⓘ |
| hasVariant |
1D NMR spectroscopy
ⓘ
2D NMR spectroscopy ⓘ CPMAS NMR ⓘ HRMAS NMR ⓘ
linked to:
NMR spectroscopy
benchtop NMR spectroscopy ⓘ high-resolution NMR spectroscopy ⓘ magic-angle spinning NMR ⓘ multidimensional NMR spectroscopy ⓘ solid-state NMR spectroscopy ⓘ solution-state NMR spectroscopy ⓘ |
| measures | resonant absorption of radiofrequency radiation by nuclei in a magnetic field ⓘ |
| relatedTo | magnetic resonance imaging ⓘ |
| requires |
radiofrequency pulses
ⓘ
static magnetic field ⓘ |
| requiresSampleForm |
semi-solid
ⓘ
solid ⓘ solution ⓘ |
| usedFor |
chemical analysis
ⓘ
conformational analysis ⓘ determining molecular structure ⓘ material characterization ⓘ metabolomics ⓘ probing molecular environment ⓘ protein structure determination ⓘ quantitative analysis ⓘ reaction monitoring ⓘ studying molecular dynamics ⓘ |
| usesPropertyOf | magnetic properties of atomic nuclei ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: NMR spectroscopy Description of subject: NMR spectroscopy is an analytical technique that uses the magnetic properties of atomic nuclei to determine the structure, dynamics, and environment of molecules.
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: NMR spectroscopy
linked to: NMR spectroscopy
linked to: NMR spectroscopy