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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: QCISD/STO-3G

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/STO-3G
 hartrees
Energy at 0K-175.918360
Energy at 298.15K-175.923742
HF Energy-175.749125
Nuclear repulsion energy76.917768
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/STO-3G
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' 3446 3446 2.20      
2 A' 3282 3282 1.29      
3 A' 3236 3236 11.68      
4 A' 1692 1692 0.19      
5 A' 1665 1665 1.14      
6 A' 1575 1575 1.60      
7 A' 1522 1522 15.05      
8 A' 1228 1228 5.47      
9 A' 1147 1147 3.77      
10 A' 972 972 0.08      
11 A' 405 405 1.41      
12 A" 3447 3447 3.01      
13 A" 3329 3329 12.42      
14 A" 1676 1676 0.95      
15 A" 1382 1382 0.14      
16 A" 1233 1233 6.02      
17 A" 857 857 0.24      
18 A" 203 203 0.16      

Unscaled Zero Point Vibrational Energy (zpe) 16149.0 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 16149.0 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/STO-3G
ABC
1.16883 0.29026 0.25579

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.564 0.000
C2 1.158 -0.502 0.000
F3 -1.275 -0.060 0.000
H4 0.098 1.223 0.907
H5 0.098 1.223 -0.907
H6 2.143 0.012 0.000
H7 1.093 -1.147 0.902
H8 1.093 -1.147 -0.902

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.57391.41921.12501.12502.21332.22162.2216
C21.57392.47272.21772.21771.11121.11121.1112
F31.41922.47272.08622.08623.41892.75692.7569
H41.12502.21772.08621.81362.54352.56963.1426
H51.12502.21772.08621.81362.54353.14262.5696
H62.21331.11123.41892.54352.54351.80601.8060
H72.22161.11122.75692.56963.14261.80601.8045
H82.22161.11122.75693.14262.56961.80601.8045

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.835 C1 C2 H7 110.477
C1 C2 H8 110.477 C2 C1 F3 111.305
C2 C1 H4 109.392 C2 C1 H5 109.392
F3 C1 H4 109.621 F3 C1 H5 109.621
H4 C1 H5 107.426 H6 C2 H7 108.711
H6 C2 H8 108.711 H7 C2 H8 108.582
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability