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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: MP2/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-178.326714
Energy at 298.15K-178.332304
HF Energy-178.019895
Nuclear repulsion energy77.498874
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/6-31G
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3162 3026 25.11      
2 A' 3104 2970 31.07      
3 A' 3077 2944 11.76      
4 A' 1598 1529 0.15      
5 A' 1574 1506 5.11      
6 A' 1495 1431 12.23      
7 A' 1457 1394 16.47      
8 A' 1160 1110 10.19      
9 A' 1064 1018 37.74      
10 A' 887 848 21.31      
11 A' 394 377 8.35      
12 A" 3184 3046 50.58      
13 A" 3158 3022 9.53      
14 A" 1560 1493 5.30      
15 A" 1332 1274 0.81      
16 A" 1205 1152 4.06      
17 A" 850 813 0.71      
18 A" 267 255 0.96      

Unscaled Zero Point Vibrational Energy (zpe) 15263.6 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 14604.2 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/6-31G
ABC
1.15103 0.30070 0.26226

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.583 0.000
C2 1.161 -0.405 0.000
F3 -1.255 -0.171 0.000
H4 -0.012 1.214 0.896
H5 -0.012 1.214 -0.896
H6 2.119 0.133 0.000
H7 1.117 -1.043 0.890
H8 1.117 -1.043 -0.890

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.52431.46401.09561.09562.16612.16462.1646
C21.52432.42752.19062.19061.09861.09641.0964
F31.46402.42752.06492.06493.38772.68012.6801
H41.09562.19062.06491.79122.55172.52403.0919
H51.09562.19062.06491.79122.55173.09192.5240
H62.16611.09863.38772.55172.55171.78321.7832
H72.16461.09642.68012.52403.09191.78321.7805
H82.16461.09642.68013.09192.52401.78321.7805

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.287 C1 C2 H7 110.304
C1 C2 H8 110.304 C2 C1 F3 108.628
C2 C1 H4 112.434 C2 C1 H5 112.434
F3 C1 H4 106.671 F3 C1 H5 106.671
H4 C1 H5 109.667 H6 C2 H7 108.658
H6 C2 H8 108.658 H7 C2 H8 108.579
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability