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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: MP4/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-31G(2df,p)
 hartrees
Energy at 0K-178.698473
Energy at 298.15K-178.704057
Nuclear repulsion energy79.265103
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 MP4/6-31G(2df,p)
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' 3172 3172        
2 A' 3084 3084        
3 A' 3072 3072        
4 A' 1551 1551        
5 A' 1522 1522        
6 A' 1452 1452        
7 A' 1416 1416        
8 A' 1145 1145        
9 A' 1099 1099        
10 A' 905 905        
11 A' 403 403        
12 A" 3182 3182        
13 A" 3121 3121        
14 A" 1506 1506        
15 A" 1317 1317        
16 A" 1210 1210        
17 A" 811 811        
18 A" 261 261        

Unscaled Zero Point Vibrational Energy (zpe) 15113.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 15113.8 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 MP4/6-31G(2df,p)
ABC
1.20553 0.31441 0.27528

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.560 0.000
C2 1.118 -0.465 0.000
F3 -1.222 -0.089 0.000
H4 0.047 1.199 0.889
H5 0.047 1.199 -0.889
H6 2.091 0.035 0.000
H7 1.052 -1.099 0.887
H8 1.052 -1.099 -0.887

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.51731.38391.09571.09572.15552.15582.1558
C21.51732.37022.16982.16981.09381.09251.0925
F31.38392.37022.01492.01493.31502.64172.6417
H41.09572.16982.01491.77832.51432.50823.0736
H51.09572.16982.01491.77832.51433.07362.5082
H62.15551.09383.31502.51432.51431.77561.7756
H72.15581.09252.64172.50823.07361.77561.7749
H82.15581.09252.64173.07362.50821.77561.7749

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.230 C1 C2 H7 110.332
C1 C2 H8 110.332 C2 C1 F3 109.478
C2 C1 H4 111.257 C2 C1 H5 111.257
F3 C1 H4 108.133 F3 C1 H5 108.133
H4 C1 H5 108.480 H6 C2 H7 108.621
H6 C2 H8 108.621 H7 C2 H8 108.653
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability