return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for C2H5F (fluoroethane)

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-178.158648
Energy at 298.15K-178.164356
HF Energy-178.158648
Nuclear repulsion energy79.953273
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 HF/Def2TZVPP
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' 3231 2929 49.15      
2 A' 3193 2894 33.90      
3 A' 3167 2871 19.84      
4 A' 1649 1495 0.52      
5 A' 1616 1465 1.76      
6 A' 1560 1414 28.44      
7 A' 1522 1379 0.90      
8 A' 1223 1109 60.11      
9 A' 1155 1047 78.02      
10 A' 956 867 17.90      
11 A' 444 403 7.04      
12 A" 3251 2947 77.70      
13 A" 3222 2920 3.80      
14 A" 1597 1447 4.29      
15 A" 1413 1281 0.87      
16 A" 1297 1176 5.80      
17 A" 870 789 0.17      
18 A" 271 246 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 15818.4 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 14337.8 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 HF/Def2TZVPP
ABC
1.23823 0.31781 0.27900

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.551 0.000
C2 1.106 -0.468 0.000
F3 -1.211 -0.078 0.000
H4 0.052 1.180 0.879
H5 0.052 1.180 -0.879
H6 2.063 0.038 0.000
H7 1.049 -1.098 0.879
H8 1.049 -1.098 -0.879

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6 H7 H8
C11.50371.36451.08181.08182.12592.14312.1431
C21.50372.34932.14452.14451.08331.08251.0825
F31.36452.34931.98741.98743.27632.63112.6311
H41.08182.14451.98741.75712.47392.48703.0451
H51.08182.14451.98741.75712.47393.04512.4870
H62.12591.08333.27632.47392.47391.75811.7581
H72.14311.08252.63112.48703.04511.75811.7571
H82.14311.08252.63113.04512.48701.75811.7571

picture of fluoroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 109.452 C1 C2 H7 110.870
C1 C2 H8 110.870 C2 C1 F3 109.890
C2 C1 H4 111.023 C2 C1 H5 111.023
F3 C1 H4 108.105 F3 C1 H5 108.105
H4 C1 H5 108.598 H6 C2 H7 108.542
H6 C2 H8 108.542 H7 C2 H8 108.500
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.241      
2 C -0.157      
3 F -0.313      
4 H 0.030      
5 H 0.030      
6 H 0.046      
7 H 0.061      
8 H 0.061      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.856 0.754 0.000 2.003
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -20.952 -0.280 0.000
y -0.280 -18.073 0.000
z 0.000 0.000 -18.095
Traceless
 xyz
x -2.867 -0.280 0.000
y -0.280 1.450 0.000
z 0.000 0.000 1.417
Polar
3z2-r22.835
x2-y2-2.878
xy-0.280
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.867 -0.097 0.000
y -0.097 3.805 0.000
z 0.000 0.000 3.621


<r2> (average value of r2) Å2
<r2> 50.578
(<r2>)1/2 7.112