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 CH3CHF2 (Ethane, 1,1-difluoro-)

using model chemistry: B2PLYP/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 B2PLYP/6-31G**
 hartrees
Energy at 0K-278.061731
Energy at 298.15K 
HF Energy-277.858172
Nuclear repulsion energy132.075820
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 B2PLYP/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' 3202 3202 15.01 42.35 0.74 0.85
2 A' 3121 3121 52.83 107.15 0.24 0.39
3 A' 3107 3107 4.47 86.11 0.02 0.04
4 A' 1524 1524 4.12 15.20 0.75 0.86
5 A' 1474 1474 69.52 3.17 0.69 0.82
6 A' 1423 1423 6.31 1.14 0.75 0.85
7 A' 1187 1187 38.91 1.70 0.05 0.09
8 A' 1167 1167 82.07 5.13 0.75 0.86
9 A' 891 891 7.89 6.63 0.23 0.37
10 A' 568 568 6.36 0.82 0.51 0.68
11 A' 465 465 12.21 1.01 0.65 0.79
12 A" 3198 3198 11.77 52.96 0.75 0.86
13 A" 1526 1526 0.02 10.86 0.75 0.86
14 A" 1434 1434 37.30 9.60 0.75 0.86
15 A" 1189 1189 128.42 2.98 0.75 0.86
16 A" 983 983 53.35 5.09 0.75 0.86
17 A" 382 382 0.06 0.24 0.75 0.86
18 A" 256 256 0.08 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13547.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13547.8 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 B2PLYP/6-31G**
ABC
0.31248 0.30060 0.17189

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.325 0.166 0.000
C2 -0.907 1.027 0.000
H3 1.262 0.730 0.000
F4 0.325 -0.644 1.105
F5 0.325 -0.644 -1.105
H6 -1.787 0.386 0.000
H7 -0.923 1.659 0.888
H8 -0.923 1.659 -0.888

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50331.09291.37031.37032.12412.13862.1386
C21.50332.18902.35242.35241.08961.08951.0895
H31.09292.18901.99641.99643.06862.53482.5348
F41.37032.35241.99642.20962.59712.62843.2913
F51.37032.35241.99642.20962.59713.29132.6284
H62.12411.08963.06862.59712.59711.77651.7765
H72.13861.08952.53482.62843.29131.77651.7759
H82.13861.08952.53483.29132.62841.77651.7759

picture of Ethane, 1,1-difluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H6 108.964 C1 C2 H7 110.121
C1 C2 H8 110.121 C2 C1 H3 114.022
C2 C1 F4 109.807 C2 C1 F5 109.807
H3 C1 F4 107.757 H3 C1 F5 107.757
F4 C1 F5 107.462 H6 C2 H7 109.217
H6 C2 H8 109.217 H7 C2 H8 109.180
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.520      
2 C -0.383      
3 H 0.086      
4 F -0.310      
5 F -0.310      
6 H 0.141      
7 H 0.127      
8 H 0.127      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.318 1.978 0.000 2.003
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.375 0.516 0.005
y 0.516 -22.476 -0.009
z 0.005 -0.009 -24.686
Traceless
 xyz
x 2.207 0.516 0.005
y 0.516 0.554 -0.009
z 0.005 -0.009 -2.760
Polar
3z2-r2-5.521
x2-y21.102
xy0.516
xz0.005
yz-0.009


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.451 -0.060 -0.000
y -0.060 3.429 0.002
z -0.000 0.002 3.455


<r2> (average value of r2) Å2
<r2> 71.937
(<r2>)1/2 8.482