Difference between revisions of "1D attributes"
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= Attributes = | = Attributes = | ||
== N= number of nuclei == | == N= number of nuclei == | ||
− | Number of nuclei (1 for CH, | + | Number of nuclei. |
+ | |||
+ | For 1D 1H, spectra, (1 for CH, 2 for CH<sub>2</sub>, N for multiplet, where N is the number of proton in the range) | ||
+ | |||
+ | |||
+ | This correspo | ||
+ | |||
== S= Multiplicity == | == S= Multiplicity == | ||
Multiplicity | Multiplicity |
Revision as of 07:32, 28 July 2017
Contents
Generalities
List of signal attributes for signals in 1D spectra:
Note that they should apear in this order!
N= number of nuclei (rounded number of proton) S= Multiplicity J= Coupling L= Label (of the signal) E= Integral (crude integrals) I= Intensity T1= T1 relaxation time in second T2= T2 relaxation time in second Diff= for diffusion rate in m2/s-1
Examples of a typical signals in 1D 1H spectra
4.1823 S=... to be completed
Examples of a typical signals in 1D 13C spectra
14.1823 S=... to be completed
Attributes
N= number of nuclei
Number of nuclei.
For 1D 1H, spectra, (1 for CH, 2 for CH2, N for multiplet, where N is the number of proton in the range)
This correspo
S= Multiplicity
Multiplicity
s | singlet |
d | doublet |
t | triplet |
q | quartet |
bs | broad singlet |
m | multiplet |
In case of overlap, second-order effects, use "m". This is meant to be the apparent multiplicity. For example a dd with similar coupling will look as a triplet, can be called "t".
J= Scalar coupling
Couplings in Hz with one digit after the period separated by the separator.
J=9.3, 4.8
following the couplings labels may be given in parenthesis to assign the coupling.
For a signal assigned to "a",
J=7.0(b)
means:J(a,b)=9.3 Hz
J=9.3(b), 4.8(c)
means: J(a,b)=9.3 Hz J(a,c)=4.8 Hz
See also, <NMREDATA_J> tag where assigned coupling should be compiled.
L= Label
Lhe label (according to list in the <NMR_SIGNALS> tag.
I= Signal intensity
I intensity (in arbitrary unit).
T1/T2= Relaxation time
Results of relaxation measurements, T1, T2, etc. can be given in seconds as:
4.8, S=q, E=2, L=a, T1=0.7
Diff= Diffusion rate
Diffusion rates in m2/s-1
4.8, S=q, E=2, L=a, Diff=1e-9