Titanium-49

Properties and data of the isotope ⁴⁹Ti.

Contents

General Data

Parent Nuclides

NMR Data

Isotones und Isobares

Literature

Titanium-49 is a stable isotope of the chemical element titanium, which has 27 neutrons in the atomic nucleus in addition to the element-specific 22 protons, resulting in a mass number of 49. ⁴⁹Ti makes up 5.41% of the composition of Earth´s titanium.

There are no practical applications for the isotopically pure nuclide.

General data

Name of the isotope:Titanium-49; Ti-49Symbol:⁴⁹Ti or 4922TiMass number A:49 (= number of nucleons)Atomic number Z:22 (= number of protons)Neutrons N:27Isotopic mass:48.947866(3) u (atomic weight of Titanium-49)Nuclide mass:48.9357975 u (calculated nuclear mass without electrons)Mass excess:-48.56251 MeVMass defect:0.458237436 u (per nucleus)Nuclear binding energy:426.84542221 MeV (per nucleus)
8.71113107 MeV (average binding energy per nucleon)Separation energy:S_N = 8.142379(24) MeV (first neutron)
S_P = 11.349(5) MeV (first proton)Half-life:stableSpin and parity:
(nuclear angular momentum)7/2-Isobaric spin: 5/2Magnetic dipole moment:μ(μ_N) = -1.10370(14)Charge radius:3.5733(21) femtometer fmMirror nucleus:Cobalt-49Year of discovery:1934

Parent Nuclides

Direct parent isotopes are: ⁴⁹V, ⁴⁹Sc.

Occurrence

Comparison of the natural Titanium isotopes including isotopic abundance (mole fraction of the isotope mixture in percent):

	Atomic Mass m_a	Quantity	Half-life	Spin
Titanium Isotopic mixture	47.867 u	100 %
Isotope ⁴⁶Ti	45.952628(3) u	8.25(3) %	stable	0+
Isotope ⁴⁷Ti	46.951759(3) u	7.44(2) %	stable	5/2-
Isotope ⁴⁸Ti	47.947942(3) u	73.72(3) %	stable	0+
Isotope ⁵⁰Ti	49.944787(3) u	5.18(2) %	stable	0+
Isotope ⁴⁹Ti	48.947866(3) u	5.41(2) %	stable	7/2-

NMR data

Nuclear magnetic properties of the NMR active Nuclide ⁴⁹Ti

Isotope:⁴⁹Ti-NMRQuantity:5.41(2) %Spin:7/2-Nuclearmagnetic moment
μ/μ_N:-1.10370(14)Gyromagnetic ratio γ:- 1.5109 · 10⁷ rad T^-1 s^-1Nuclear g-factor:g_l = -0.31534285714286Quadrupole moment Q:+ 0.247(11) barn (100 fm²)Resonance frequency:v₀ = 2.4048 at 1 TRelative Sensitivity:0.00378 (H₀ = const.)
1.1861 (v₀ = const.)
[related to ¹H = 1.000]

Isotones and Isobars

The following table shows the atomic nuclei that are isotonic (same neutron number N = 27) and isobaric (same nucleon number A = 49) with Titanium-49. Naturally occurring isotopes are marked in green; light green = naturally occurring radionuclides.

Z	Isotone N = 27	Isobar A = 49
11	³⁸Na
12	³⁹Mg
13	⁴⁰Al
14	⁴¹Si
15	⁴²P
16	⁴³S	⁴⁹S
17	⁴⁴Cl	⁴⁹Cl
18	⁴⁵Ar	⁴⁹Ar
19	⁴⁶K	⁴⁹K
20	⁴⁷Ca	⁴⁹Ca
21	⁴⁸Sc	⁴⁹Sc
22	⁴⁹Ti	⁴⁹Ti
23	⁵⁰V	⁴⁹V
24	⁵¹Cr	⁴⁹Cr
25	⁵²Mn	⁴⁹Mn
26	⁵³Fe	⁴⁹Fe
27	⁵⁴Co	⁴⁹Co
28	⁵⁵Ni	⁴⁹Ni
29	⁵⁶Cu
30	⁵⁷Zn
31	⁵⁸Ga
32	⁵⁹Ge

External data and identifiers

InChI Key:RTAQQCXQSZGOHL-OUBTZVSYSA-NSMILES:[49Ti]PubChem:ID 131708404Adopted Levels, Gammas:NuDat 49Ti

Literature and References

[1] - T. J. Gray, J. M. Allmond, C. Benetti et al.:
Suppressed electric quadrupole collectivity in ⁴⁹Ti.
In: Physics Letters B, 855, 138856, (2024), DOI 10.1016/j.physletb.2024.138856.