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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-178.540292
Energy at 298.15K-178.545905
HF Energy-178.076078
Nuclear repulsion energy78.950510
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' 3155 3005 25.59      
2 A' 3080 2933 19.16      
3 A' 3075 2929 32.24      
4 A' 1580 1505 0.12      
5 A' 1549 1476 2.29      
6 A' 1481 1411 31.13      
7 A' 1445 1376 5.21      
8 A' 1164 1108 28.54      
9 A' 1112 1059 55.11      
10 A' 922 878 14.27      
11 A' 413 393 6.42      
12 A" 3168 3017 36.07      
13 A" 3124 2975 31.15      
14 A" 1534 1460 4.38      
15 A" 1326 1262 0.01      
16 A" 1227 1168 4.81      
17 A" 830 791 0.31      
18 A" 272 259 0.75      

Unscaled Zero Point Vibrational Energy (zpe) 15228.4 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 14502.0 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/6-31G*
ABC
1.19287 0.31279 0.27352

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 0.557 0.000
C2 1.120 -0.459 0.000
F3 -1.229 -0.094 0.000
H4 0.064 1.200 0.890
H5 0.064 1.200 -0.890
H6 2.091 0.052 0.000
H7 1.061 -1.097 0.889
H8 1.061 -1.097 -0.889

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.51191.39081.09931.09932.15132.15682.1568
C21.51192.37662.15802.15801.09731.09621.0962
F31.39082.37662.03382.03383.32302.65272.6527
H41.09932.15802.03381.77952.49402.50383.0713
H51.09932.15802.03381.77952.49403.07132.5038
H62.15131.09733.32302.49402.49401.78111.7811
H72.15681.09622.65272.50383.07131.78111.7781
H82.15681.09622.65273.07132.50381.78111.7781

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 110.063 C1 C2 H7 110.567
C1 C2 H8 110.567 C2 C1 F3 109.852
C2 C1 H4 110.474 C2 C1 H5 110.474
F3 C1 H4 108.961 F3 C1 H5 108.961
H4 C1 H5 108.074 H6 C2 H7 108.592
H6 C2 H8 108.592 H7 C2 H8 108.400
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability