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All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: QCISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G
 hartrees
Energy at 0K-178.355606
Energy at 298.15K-178.361168
HF Energy-178.019346
Nuclear repulsion energy77.371949
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
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' 3099 2986 29.38      
2 A' 3048 2937 27.93      
3 A' 3024 2914 14.50      
4 A' 1573 1516 0.17      
5 A' 1551 1494 4.68      
6 A' 1477 1424 10.95      
7 A' 1437 1384 16.18      
8 A' 1146 1104 10.50      
9 A' 1053 1015 37.67      
10 A' 879 847 21.05      
11 A' 392 378 8.40      
12 A" 3118 3005 54.43      
13 A" 3092 2979 9.18      
14 A" 1537 1481 4.91      
15 A" 1312 1264 0.68      
16 A" 1193 1149 4.06      
17 A" 839 808 0.53      
18 A" 259 249 1.04      

Unscaled Zero Point Vibrational Energy (zpe) 15013.1 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 14466.6 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
ABC
1.14509 0.30013 0.26171

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.584 0.000
C2 1.161 -0.411 0.000
F3 -1.256 -0.166 0.000
H4 -0.009 1.218 0.899
H5 -0.009 1.218 -0.899
H6 2.125 0.125 0.000
H7 1.115 -1.052 0.893
H8 1.115 -1.052 -0.893

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.52901.46231.10001.10002.17342.17202.1720
C21.52902.42932.19802.19801.10271.10071.1007
F31.46232.42932.06762.06763.39282.68392.6839
H41.10002.19802.06761.79782.56032.53313.1031
H51.10002.19802.06761.79782.56033.10312.5331
H62.17341.10273.39282.56032.56031.79021.7902
H72.17201.10072.68392.53313.10311.79021.7870
H82.17201.10072.68393.10312.53311.79021.7870

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.299 C1 C2 H7 110.305
C1 C2 H8 110.305 C2 C1 F3 108.582
C2 C1 H4 112.427 C2 C1 H5 112.427
F3 C1 H4 106.736 F3 C1 H5 106.736
H4 C1 H5 109.606 H6 C2 H7 108.673
H6 C2 H8 108.673 H7 C2 H8 108.535
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability