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Chemical shift: Standards, Factors causing chemical shifts & Chemical shift referencing

In nuclear magnetic resonance (NMR) spectroscopy, the chemical shift is the resonant frequency of an atomic nucleus relative to a standard in a magnetic field. Often the position and number of chemical shifts are diagnostic of the structure of a molecule. Chemical shifts are also used to describe signals in other forms of spectroscopy such as…

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Chemical shift topic overview

The analysis highlights Standards, Factors causing chemical shifts and Chemical shift referencing as prominent areas in the source structure around Chemical shift.

Related topics
59
Source areas
8
Connected nodes
67
Extracted relationships
59
Concept neighborhoods
31
Bridge connections
67

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 13 topics
Factors causing chemical shifts · 11 topics
Chemical shift referencing · 10 topics
The induced magnetic field · 9 topics
Operating frequency · 7 topics
Other chemical shifts · 5 topics
Chemical shift manipulation · 2 topics
Magnetic properties of most common nuclei · 2 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

Operating frequency

Chemical shift referencing

The induced magnetic field

Factors causing chemical shifts

Magnetic properties of most common nuclei

Chemical shift manipulation

Other chemical shifts

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Chemical shift connects Entity context

The extracted context around Chemical shift shows recurring relationship patterns in the source. For example, Chemical shift → Both, External, If, In, Indirect, Internal, Magnetic, NMR, Practically, Problems, Similar, Substitution, The, With Another extracted example is Chemical shift → Bonding, Circular, Electron-donating, Lenz's, Not, Nuclei, The, This, Trends, When. Use these groups to spot repeated connection types before inspecting the individual relationships.

Chemical shift

Top relations

has method · 14
Chemical shift → Both, External, If, In, Indirect, Internal, Magnetic, NMR, Practically, Problems, Similar, Substitution, The, With
related to The induced magnetic field · 10
Chemical shift → Bonding, Circular, Electron-donating, Lenz's, Not, Nuclei, The, This, Trends, When
related to Other chemical shifts · 9
Chemical shift → As, Chemical, Mössbauer, NMR, Shoolery's, The, The Knight, The NMR, X-ray
related to Chemical shift manipulation · 6
Chemical shift → In, J-coupling, MRI, NMR, Similarly, Using
related to External links · 5
Chemical shift → IR, NMR, Problem, Problems, TableProton
related to Factors causing chemical shifts · 4
Chemical shift → Electron, For, Important, NMR
related to Chemical shift referencing · 3
Chemical shift → B0, Chemical, Since
is a · 1
Chemical shift → resonant frequency of an atomic nucleus relative to a standard in a magnetic field

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

chemical shift field magnetic nmr nucleus frequency reference resonance referencing also used nuclei shifts ppm sample electron external induced 1h

Chemical shift relationships Subject–Predicate–Object triples

TTTA extracted 59 structured relationships around Chemical shift. Examples in this analysis include Chemical shift → is a → resonant frequency of an atomic nucleus relative to a standard in a magnetic field and photoemission spectroscopy.Some atomic nuclei possess a magnetic moment → instance of → Chemical shifts are also used to describe signals in other forms of spectroscopy. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Chemical shiftis aresonant frequency of an atomic nucleus relative to a standard in a magnetic field0.90text
photoemission spectroscopy.Some atomic nuclei possess a magnetic momentinstance ofChemical shifts are also used to describe signals in other forms of spectroscopy0.80text
nitro groups lead to deshielding of the nucleusinstance oflead to increased shielding whereas electron-withdrawing substituents0.80text
proteinsinstance ofwhich has a spin of 0 and therefore is NMR-inactive.15N because of being a key component of important biomolecules0.80text
DNA19F because of high relative sensitivity31P because of frequent occurrence in organic compoundsinstance ofwhich has a spin of 0 and therefore is NMR-inactive.15N because of being a key component of important biomolecules0.80text
moderate relative sensitivity Chemical shift manipulationIn generalinstance ofwhich has a spin of 0 and therefore is NMR-inactive.15N because of being a key component of important biomolecules0.80text
the associated increased signal-to-noiseinstance ofwhich has a spin of 0 and therefore is NMR-inactive.15N because of being a key component of important biomolecules0.80text
resolution has driven a move towards increasingly high field strengthsinstance ofwhich has a spin of 0 and therefore is NMR-inactive.15N because of being a key component of important biomolecules0.80text
Chemical shifthas methodPractically0.60section
Chemical shifthas methodNMR0.60section
Chemical shifthas methodIndirect0.60section
Chemical shifthas methodBoth0.60section

Related concept clusters Concept neighborhoods

The concept neighborhoods around Chemical shift bring nearby vocabulary together. In this analysis, examples include Shift, Nmr and Shifts. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Chemical shift
    • Shift
    • Nmr
    • Shifts
    • Frequency
    • Magnetic
    • Used
    • Spectroscopy
    • Reference
    • Resonance
    • Referencing
    • Field
    • Also
  • chemical shift
    • Shift
    • Nmr
    • Shifts
    • Frequency
    • Magnetic
    • Used
    • Spectroscopy
    • Reference
    • Resonance
    • Referencing
    • Field
    • Ppm
  • nuclear magnetic resonance
    • Field
    • Resonance
    • Frequencies
    • Applied
    • Induced
    • Nucleus
    • Shift
    • Frequency
    • Spectroscopy
    • Signal
    • Chemical
    • Nuclear
  • resonant frequency
    • Resonance
    • Field
    • B0
    • Applied
    • Signal
    • Shift
    • Magnetic
    • Reference
    • Usually
    • Sample
    • Referencing
    • Used
  • magnetic field
    • Field
    • Magnetic
    • Applied
    • Frequency
    • Induced
    • Resonance
    • Nucleus
    • Shift
    • External
    • B0
    • Electrons
    • Chemical
  • magnetic moment
    • Field
    • Applied
    • Induced
    • Resonance
    • Nucleus
    • Shift
    • Frequency
    • Chemical
    • Nuclear
    • Electrons
    • External
    • Sample
  • nuclear spin
    • Resonance
    • Frequencies
    • Spectroscopy
    • Distribution
    • Nuclei
    • Nucleus
    • 13c
    • Different
    • Nuclear
    • Proton
    • Relative
    • Spin
  • local geometry
    • Induced
    • Electrons
    • Spectroscopy
    • Nucleus
    • 1h
    • Used
    • Magnetic
    • Distribution
    • 13c
    • Compounds
    • Diamagnetic
    • Proton

Connections between topic areas Semantic bridges

For Chemical shift, one of the stronger structural bridges in this analysis connects Chemical shift with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Chemical shiftOverview · splits 54 ⟂ 14
Chemical shiftFactors causing chemical shifts · splits 56 ⟂ 12
Chemical shiftChemical shift referencing · splits 57 ⟂ 11
Chemical shiftThe induced magnetic field · splits 58 ⟂ 10
Chemical shiftOperating frequency · splits 60 ⟂ 8
Chemical shiftOther chemical shifts · splits 62 ⟂ 6
Chemical shiftMagnetic properties of most common nuclei · splits 65 ⟂ 3
Chemical shiftChemical shift manipulation · splits 65 ⟂ 3

Map overview Semantic statistics

Chemical shift

Nodes68
Edges67
Triples59
Avg. degree1.97
Density0.029412
Components1

Source & methodology

TTTA analyzes the structure around Chemical shift to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as Standards, Factors causing chemical shifts & Chemical shift referencing, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Chemical shift · EN edition · Analysis: TopicsToTalkAbout

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