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Experimental data for CH3CHFCH2CH3 (2-fluorobutane)

22 02 02 11 45
Other names
Butane, 2-fluoro-;
INChI INChIKey SMILES IUPAC name
InChI=1S/C4H9F/c1-3-4(2)5/h4H,3H2,1-2H3/t4-/m0/s1 C[C@H](F)CC
InChI=1S/C4H9F/c1-3-4(2)5/h4H,3H2,1-2H3 IXHWZHXLJJPXIS-UHFFFAOYSA-N
State Conformation
1A C1
Enthalpy of formation (Hfg), Entropy, Integrated heat capacity (0 K to 298.15 K) (HH), Heat Capacity (Cp)
Property Value Uncertainty units Reference Comment
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 2997   2004Dur/Zhu:829-841       CH3 a-str
2 A 2993           CH3 a-str
3 A 2984           CH3 a-str
4 A 2975           CH3 a-str
5 A 2940           CH2 a-stretch
6 A 2918           CH3 s-stretch
7 A 2918           CH3 a-str
8 A 2893           CH2 s-stretch
9 A 2869           CH stretch
10 A 1473           CH3 a-deform
11 A 1465           CH3 a-deform
12 A 1456           CH3 a-deform
13 A 1449           CH3 a-deform
14 A 1441           CH2 deformation
15 A 1390           CH out-of-plane bend
16 A 1384           CH bend
17 A 1373           CH3 s-deform
18 A 1353           CH3 s-deform
19 A 1305           CH2 wag
20 A 1271           CH2 twist
21 A 1181           CH3 rock
22 A 1137           CH3 rock
23 A 1125           CC stretch
24 A 1033           CC stretch
25 A 987           CH3 rock
26 A 968           CH3 rock
27 A 904           CF stretch
28 A 823           CC stretch
29 A 770           CH2 twist
30 A 493           CCC bend
31 A 457           CCF op bend
32 A 369           CCF ip bend
33 A 260           CH3 torsion
34 A 255           CCC bend
35 A 243           CH3 torsion
36 A 108           torsion

vibrational zero-point energy: 26480.0 cm-1 (from fundamental vibrations)
Calculated vibrational frequencies for CH3CHFCH2CH3 (2-fluorobutane).
Rotational Constants (cm-1) rotational constants
See section I.F.4 to change rotational constant units
A B C reference comment

Calculated rotational constants for CH3CHFCH2CH3 (2-fluorobutane).
Product of moments of inertia moments of inertia
amu3Å6   0gm3 cm6
Geometric Data
picture of 2-fluorobutane

Point Group C1


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

Cartesians
Atom x (Å) y (Å) z (Å)

Atom - Atom Distances bond lengths
Distances in Å
 

Calculated geometries for CH3CHFCH2CH3 (2-fluorobutane).

Bond descriptions


Examples: C-C single bond, C=C, double bond, C#C triple bond, C:C aromatic bond
Bond Type Count
C-C 3
C-F 1
H-C 9

Connectivity
Atom 1 Atom 2
C1 C2
C1 H6
C1 H7
C1 H8
C2 C3
C2 F5
C2 H9
C3 C4
C3 H10
C3 H11
C4 H12
C4 H13
C4 H14
Electronic energy levels (cm-1)
Energy (cm-1) Degeneracy reference description
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 C1 True           C1 3 5
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 CH3CHFCH2CH3 (2-fluorobutane).
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 C1 True       C1 3 5

Calculated electric quadrupole moments for CH3CHFCH2CH3 (2-fluorobutane).

References
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squib reference DOI
2004Dur/Zhu:829-841 JR Durig, X Zhua, GA Guirgis "Infrared and Raman spectra, conformational stability, ab initio calculations and vibrational assignment of 2-fluorobutane" Spec. Acta A 60 (2004) 829–841 10.1016/S1386-1425(03)00308-1

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