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Carbon-13

Properties and data of the isotope 13C.

 

See also: list of Carbon isotopes.

 

General data

Name of the isotope:Carbon-13; C-13Symbol:13CMass number A:13Atomic number Z:6 (= number of protons)Neutrons N:7Isotopic mass:13.003354835(2) u (atomic weight of Carbon-13)Nuclide mass:13.0000634 u (calculated nuclear mass without electrons)Mass excess:3.12501 MeVMass defect:0.104249769 u (per nucleus)Nuclear binding energy:97.10803432 MeV (per nucleus)
7.46984879 MeV (average binding energy per nucleon)
Separation energy:SN = 4.94631(0) MeV (first neutron)
SP = 17.5334(13) MeV (first proton)
Half-life:stableSpin and parity:1/2-isobaric spin: 1/2Charge radius:2.4614(34) femtometer fmYear of discovery:1929

 

Parent Nuclides

Direct parent isotopes are: 13B, 13N.

 

Occurrence

Comparison of the natural Kohlenstoff isotopes including isotopic abundance (proportion of the isotope mixture):

 

Atomic Mass maQuantityHalf-lifeSpin
Kohlenstoff
Isotopic mixture
12,011 u100 %
Isotope 12C12,00000000000 u98,94 %stable0+
Isotope 13C13,003354835(2) u1,06 %stable1/2-
Isotope 14C14,003241988(4) u5700(30) a0+

 

NMR data

13C belongs to the NMR active Nuclides.

Isotope:13C-NMRQuantity:1,06 % [0,96 - 1,16 %]Spin:1/2-Nuclearmagnetic moment
μ/μN:
+ 0,702369(4)Gyromagnetic ratio
107 rad T-1 s-1:
6,7283Resonance frequency
v0 at 1 T:
10,7084Relative Sensitivity:0,01591 (H0 = const.)
0,2515 (v0 = const.)
[related to 1H = 1,000]

 

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 7) and isobaric (same nucleon number A = 13) with Carbon-13. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

 

OZIsotone N = 7Isobar A = 13
29He
310Li
411Be13Be
512B13B
613C13C
714N13N
815O13O
916F
1017Ne
1118Na
1219Mg

 

External data and identifiers

CAS:14762-74-4InChI Key:OKTJSMMVPCPJKN-OUBTZVSYSA-NSMILES:[13C]Adopted Levels, Gammas:NuDat 13C

 

Literature and References

[1] - Darren Brown, John Greene:
10th international symposium on the synthesis and applications of isotopes and isotopically labelled compounds.
In: Journal of Labelled Compounds and Radiophamaceuticals, (2010), DOI 10.1002/jlcr.1775.

[2] - Hu-LinLi, Yong-Lin Ju, Liang-JunLi, Da-GangXu:
Separation of isotope 13C using high-performance structured packing.
In: Chemical Engineering and Processing: Process Intensification, (2010), DOI 10.1016/j.cep.2010.02.001.

 


Category: Isotopes

Last update: 12.11.2020



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