O

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Species data
Common Formula O
Stoichiometric Formula O
Name Oxygen atom
Mass   15.99491 a.m.u
Charge   0
CAS   17778-80-2
Inchi InChI=1S/O
InchiKey QVGXLLKOCUKJST-UHFFFAOYSA-N
State Ground State
Electronic state

Search all reactions with O

KIDA O

ISM Abundance  
log10 Abundance Reference Source Name Source Type Link
Polarizability  
Definition: total
Value 3): 0.79 ±0.03
Method: Reviews and Evaluations
Origin: Bibliography
Reference: Schwerdtfeger, Peter et al. ;2019;Molecular Physics;117, 1200-1225
Definition: total
Value 3): 0.802 ±0.01604
Method: Calculations
Origin: Bibliography
Reference: Lide, D. R.. ;2000;
Dipole moment  
Value (D): 0
Method: N/A
Origin: Database : NIST COMPUTATIONAL CHEMISTRY COMPARISON AND BENCHMARK DATABASE
Reference:
Enthalpy of formation  
T (K): 0
Value (kJ.mol-1) : 246.79 ±0.002
Method: Reviews and Evaluations
Origin: Other database
Reference:
T (K): 298
Value (kJ.mol-1) : 249.175 ±0.002
Method: Reviews and Evaluations
Origin: Other database
Reference:
T (K): 298
Value (kJ.mol-1) : 249.23
Method: Measurements
Origin: Other database
Reference:
T (K): 0
Value (kJ.mol-1) : 246.84
Method: Measurements
Origin: Other database
Reference:
Desorption energy  
Emean (K): 1660 ±60
E min (K): 0
E max (K): 0
Pre-exponential factor (s-1): 1.00E+12
Method: Measurements
Origin: Bibliography
Reference: He, J. et al. ;2015;Astrophysical Journal;801, 120
Type of surface: H2O / Amorphous / Porous
Description:
Evaluation:  
Emean (K): 1850 ±90
E min (K): 0
E max (K): 0
Pre-exponential factor (s-1): 1.00E+12
Method: Measurements
Origin: Bibliography
Reference: He, J. et al. ;2015;Astrophysical Journal;801, 120
Type of surface: SiOx / Silicate
Description:
Evaluation:  
Emean (K): 1600 ±480
E min (K): 0
E max (K): 0
Pre-exponential factor (s-1): 0.00E+0
Method: Calculations
Origin: Bibliography
Reference: Wakelam, V. et al. ;2017;ArXiv e-prints;,
Type of surface: H2O
Description: To estimate the unknown binding energies (for most of the radicals for example), we have developed a model founded on the stabilization energy of the complex between the various species and one water molecule. Then, we assume that the binding energy of the species with ASW is proportional to the energy of interaction between this species and one water molecule. To determine the proportionality coefficients, we fit the dependency of the experimental binding energies versus the calculated energies of the complexes for 16 stable molecules. Uncertainties in ED is estimated to be 30%. The preexponential factor is to be computed using the Hasegawa et al. (1992) approximation.
Evaluation:  
Emean (K): 1751
E min (K):
E max (K):
Pre-exponential factor (s-1): 2.73E+13
Method: Reviews and Evaluations
Origin: Bibliography
Reference: Minissale, Marco et al. ;2022;ACS Earth and Space Chemistry;,
Type of surface: Compact Amorphous Solid Water
Description: Uncertainties are discussed in Minissale et al. (2022)
Evaluation:  
Emean (K): 1821
E min (K):
E max (K):
Pre-exponential factor (s-1): 3.10E+13
Method: Reviews and Evaluations
Origin: Bibliography
Reference: Minissale, Marco et al. ;2022;ACS Earth and Space Chemistry;,
Type of surface: Oxydized Highly-Oriented Pyrolytic Graphite
Description: Uncertainties are discussed in Minissale et al. (2022)
Evaluation:  
Diffusion energy  
No data