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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: MP2/CEP-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/CEP-31G
 hartrees
Energy at 0K-37.951322
Energy at 298.15K-37.956828
HF Energy-37.688455
Nuclear repulsion energy45.428979
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/CEP-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' 3149 3043 55.89      
2 A' 3100 2995 49.41      
3 A' 3049 2946 23.57      
4 A' 1544 1492 0.88      
5 A' 1527 1475 5.12      
6 A' 1459 1410 14.42      
7 A' 1411 1363 14.53      
8 A' 1130 1091 10.39      
9 A' 1028 993 48.55      
10 A' 839 811 34.45      
11 A' 384 371 9.26      
12 A" 3193 3085 95.66      
13 A" 3162 3056 5.97      
14 A" 1510 1459 5.78      
15 A" 1286 1242 1.43      
16 A" 1168 1128 5.49      
17 A" 832 804 1.48      
18 A" 245 237 0.91      

Unscaled Zero Point Vibrational Energy (zpe) 15006.5 cm-1
Scaled (by 0.9663) Zero Point Vibrational Energy (zpe) 14500.8 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 MP2/CEP-31G
ABC
1.11573 0.29134 0.25406

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.596 0.000
C2 1.183 -0.408 0.000
F3 -1.273 -0.179 0.000
H4 -0.038 1.223 0.910
H5 -0.038 1.223 -0.910
H6 2.147 0.147 0.000
H7 1.143 -1.052 0.902
H8 1.143 -1.052 -0.902

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.55191.49041.10651.10652.19332.19842.1984
C21.55192.46712.23202.23201.11251.10851.1085
F31.49042.46712.07912.07913.43572.72232.7223
H41.10652.23202.07911.82102.59982.56303.1390
H51.10652.23202.07911.82102.59983.13902.5630
H62.19331.11253.43572.59982.59981.80541.8054
H72.19841.10852.72232.56303.13901.80541.8037
H82.19841.10852.72233.13902.56301.80541.8037

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.712 C1 C2 H7 110.340
C1 C2 H8 110.340 C2 C1 F3 108.357
C2 C1 H4 113.133 C2 C1 H5 113.133
F3 C1 H4 105.422 F3 C1 H5 105.422
H4 C1 H5 110.746 H6 C2 H7 108.758
H6 C2 H8 108.758 H7 C2 H8 108.893
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability