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Experimental data for CH3COF (Acetyl fluoride)

22 02 02 11 45
Other names
Acetyl fluoride; Fluorid kyseliny octove; Methylcarbonyl fluoride;
INChI INChIKey SMILES IUPAC name
InChI=1S/C2H3FO/c1-2(3)4/h1H3 JUCMRTZQCZRJDC-UHFFFAOYSA-N O=C(F)C Acetyl fluoride
State Conformation
1A' NULL
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
Hfg(298.15K) enthalpy of formation -442.10   kJ mol-1 TRC
Hfg(0K) enthalpy of formation -432.40   kJ mol-1 TRC
Entropy (298.15K) entropy 283.11   J K-1 mol-1 TRC
Integrated Heat Capacity (0 to 298.15K) integrated heat capacity 13.83   kJ mol-1 TRC
Information can also be found for this species in the NIST Chemistry Webbook
Vibrational levels (cm-1) vibrations
Mode Number Symmetry Frequency Intensity Comment Description
Fundamental(cm-1) Harmonic(cm-1) Reference (km mol-1) unc. Reference
1 A' 3043   webbook      
2 A' 2955   webbook      
3 A' 1870   webbook      
4 A' 1440   webbook      
5 A' 1378   webbook      
6 A' 1188   webbook      
7 A' 1000   webbook      
8 A' 826   webbook      
9 A' 598   webbook      
10 A' 420   webbook      
11 A" 3004   webbook      
12 A" 1437   webbook      
13 A" 1054   webbook      
14 A" 567   webbook      
15 A" 123   webbook      

vibrational zero-point energy: 10451.5 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for CH3COF (Acetyl fluoride).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment
0.36823 0.32308 0.17752 1959Pie/Kri:875

Calculated rotational constants for CH3COF (Acetyl fluoride).
Product of moments of inertia moments of inertia
226831.4amu3Å6   1.03865472948581E-114gm3 cm6
Geometric Data
picture of Acetyl fluoride

Point Group Cs


Internal coordinates
distances (r) in Å, angles (a) in degrees, dihedrals (d) in degrees
Description Value unc. Connectivity Reference Comment
Atom 1 Atom 2 Atom 3 Atom 4
rCC 1.503   1 2 1959Pie/Kri:875
rCF 1.348   1 4 1959Pie/Kri:875
rCO 1.181   1 3 1959Pie/Kri:875
rCH 1.084   2 5 1959Pie/Kri:875
aCCF 110.3 2 1 4 1959Pie/Kri:875
aCCO 128.35 2 1 3 1959Pie/Kri:875
aHCC 110.4 1 2 5 1959Pie/Kri:875
aHCH 110.85 5 2 6 1959Pie/Kri:875

Cartesians
Atom x (Å) y (Å) z (Å)
C1 0.0000 0.1904 0.0000
C2 0.9884 -0.9419 0.0000
O3 0.2158 1.3515 0.0000
F4 -1.2600 -0.2887 0.0000
H5 2.0023 -0.5584 0.0000
H6 0.8401 -1.5729 0.8688
H7 0.8401 -1.5729 -0.8688

Atom - Atom Distances bond lengths
Distances in Å
  C1 C2 O3 F4 H5 H6 H7
C1   1.50301.18101.34802.13772.13772.1377
C2 1.5030   2.42002.34141.08401.08401.0840
O3 1.18102.4200   2.20642.61523.11403.1140
F4 1.34802.34142.2064   3.27342.61042.6104
H5 2.13771.08402.61523.2734   1.77051.7705
H6 2.13771.08403.11402.61041.7705   1.7377
H7 2.13771.08403.11402.61041.77051.7377  

Calculated geometries for CH3COF (Acetyl fluoride).

Experimental Bond Angles (degrees) from cartesians bond angles

atom1 atom2 atom3 angle         atom1 atom2 atom3 angle
C1 C2 H5 110.400 C1 C2 H6 110.400
C1 C2 H7 110.400 C2 C1 O3 128.350
C2 C1 F4 110.300 O3 C1 F4 121.350
H5 C2 H6 109.506 H5 C2 H7 109.506
H6 C2 H7 106.549

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C-C 1
C-F 1
C=O 1
H-C 3

Connectivity
Atom 1 Atom 2
C1 C2
C1 O3
C1 F4
C2 H5
C2 H6
C2 H7
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
0 1   1A'

Ionization Energies (eV)
Ionization Energy I.E. unc. vertical I.E. v.I.E. unc. reference
11.510 0.020     webbook
Dipole, Quadrupole and Polarizability
Electric dipole moment dipole
State Config State description Conf description Exp. min. Dipole (Debye) Reference comment Point Group Components
x y z total dipole quadrupole
1 1 1A' NULL True       2.960 NSRDS-NBS10 MW Cs 2 3
Experimental dipole measurement abbreviations: MW microwave; DT Dielectric with Temperature variation; DR Indirect (usually an upper limit); MB Molecular beam
Calculated electric dipole moments for CH3COF (Acetyl fluoride).
Electric quadrupole moment quadrupole
State Config State description Conf description Exp. min. Quadrupole (D Å) Reference comment Point Group Components
xx yy zz dipole quadrupole
1 1 1A' NULL True       Cs 2 3

Calculated electric quadrupole moments for CH3COF (Acetyl fluoride).

References
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squib reference DOI
1959Pie/Kri:875 Pierce, Krisher, Microwave Spectrum, Internal Barrier, Structure, Conformation, and Dipole Moment of Acetyl Fluoride, J. Chem. Phys., Vol. 31, #4, pgs. 875-882 10.1063/1.1730542
NSRDS-NBS10 R. D. Nelson Jr., D. R. Lide, A. A. Maryott "Selected Values of electric dipole moments for molecules in the gas phase" NSRDS-NBS10, 1967 10.6028/NBS.NSRDS.10
TRC Frenkel, M; Marsh, K.N.; Wilhoit, R.C.; Kabo, G.J.; Roganov, G.N.,Thermodynamics of Organic Compounds in the Gas State,Thermodynamics Research Center, College Station, TX, 1994  
webbook NIST Chemistry Webbook (http://webbook.nist.gov/chemistry) 10.18434/T4D303

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