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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: MP2/CEP-121G*

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-121G*
 hartrees
Energy at 0K-38.197233
Energy at 298.15K-38.202828
HF Energy-37.756019
Nuclear repulsion energy46.696843
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-121G*
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' 3177 3027 27.60      
2 A' 3105 2959 42.28      
3 A' 3078 2933 13.95      
4 A' 1562 1488 0.44      
5 A' 1537 1465 2.93      
6 A' 1463 1394 32.39      
7 A' 1425 1358 4.95      
8 A' 1140 1086 17.48      
9 A' 1081 1030 84.18      
10 A' 895 853 21.39      
11 A' 408 389 6.92      
12 A" 3198 3047 49.64      
13 A" 3170 3021 12.89      
14 A" 1521 1450 6.00      
15 A" 1309 1247 0.01      
16 A" 1211 1154 4.51      
17 A" 818 779 0.22      
18 A" 270 257 0.70      

Unscaled Zero Point Vibrational Energy (zpe) 15184.9 cm-1
Scaled (by 0.9528) Zero Point Vibrational Energy (zpe) 14468.2 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/CEP-121G*
ABC
1.18510 0.30850 0.26995

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.569 0.000
C2 1.138 -0.441 0.000
F3 -1.235 -0.122 0.000
H4 0.011 1.199 0.895
H5 0.011 1.199 -0.895
H6 2.100 0.084 0.000
H7 1.082 -1.074 0.890
H8 1.082 -1.074 -0.890

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.52231.41551.09441.09442.15512.15952.1595
C21.52232.39482.18262.18261.09561.09311.0931
F31.41552.39482.02452.02453.34122.65862.6586
H41.09442.18262.02451.79012.53152.51293.0822
H51.09442.18262.02451.79012.53153.08222.5129
H62.15511.09563.34122.53152.53151.77971.7797
H72.15951.09312.65862.51293.08221.77971.7795
H82.15951.09312.65863.08222.51291.77971.7795

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.745 C1 C2 H7 110.237
C1 C2 H8 110.237 C2 C1 F3 109.157
C2 C1 H4 112.006 C2 C1 H5 112.006
F3 C1 H4 106.834 F3 C1 H5 106.834
H4 C1 H5 109.737 H6 C2 H7 108.810
H6 C2 H8 108.810 H7 C2 H8 108.967
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability