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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: QCISD/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 QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-178.682393
Energy at 298.15K-178.687993
HF Energy-178.092904
Nuclear repulsion energy79.418649
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 QCISD/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' 3175 3008 19.22      
2 A' 3093 2930 5.97      
3 A' 3084 2922 39.64      
4 A' 1562 1480 0.57      
5 A' 1531 1451 1.29      
6 A' 1468 1390 28.80      
7 A' 1429 1354 1.14      
8 A' 1162 1101 53.33      
9 A' 1111 1053 36.25      
10 A' 915 867 8.83      
11 A' 409 387 5.15      
12 A" 3185 3017 25.96      
13 A" 3130 2965 28.47      
14 A" 1514 1434 3.73      
15 A" 1329 1259 0.24      
16 A" 1221 1157 4.80      
17 A" 817 774 0.39      
18 A" 260 246 0.59      

Unscaled Zero Point Vibrational Energy (zpe) 15197.1 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 14397.7 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 QCISD/6-31G(2df,p)
ABC
1.21167 0.31538 0.27626

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.554 0.000
C2 1.111 -0.471 0.000
F3 -1.221 -0.078 0.000
H4 0.070 1.194 0.886
H5 0.070 1.194 -0.886
H6 2.081 0.032 0.000
H7 1.050 -1.107 0.886
H8 1.050 -1.107 -0.886

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.51191.37511.09551.09552.14562.15582.1558
C21.51192.36522.15442.15441.09291.09211.0921
F31.37512.36522.01792.01793.30422.64622.6462
H41.09552.15442.01791.77292.48562.50093.0652
H51.09552.15442.01791.77292.48563.06522.5009
H62.14561.09293.30422.48562.48561.77351.7735
H72.15581.09212.64622.50093.06521.77351.7716
H82.15581.09212.64623.06522.50091.77351.7716

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.875 C1 C2 H7 110.725
C1 C2 H8 110.725 C2 C1 F3 109.927
C2 C1 H4 110.413 C2 C1 H5 110.413
F3 C1 H4 109.003 F3 C1 H5 109.003
H4 C1 H5 108.036 H6 C2 H7 108.524
H6 C2 H8 108.524 H7 C2 H8 108.401
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability