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: PBE1PBE/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at PBE1PBE/6-311G*
 hartrees
Energy at 0K-278.095297
Energy at 298.15K 
HF Energy-278.095297
Nuclear repulsion energy132.619924
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 PBE1PBE/6-311G*
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' 3168 3036 20.52 40.98 0.70 0.82
2 A' 3105 2976 48.92 116.31 0.29 0.45
3 A' 3078 2950 3.79 107.34 0.01 0.03
4 A' 1499 1436 7.39 10.34 0.75 0.86
5 A' 1455 1394 89.19 3.04 0.46 0.63
6 A' 1397 1339 2.13 0.74 0.68 0.81
7 A' 1177 1128 67.17 1.59 0.29 0.45
8 A' 1163 1115 75.37 3.58 0.67 0.80
9 A' 886 850 7.98 5.31 0.25 0.41
10 A' 573 549 5.77 0.95 0.59 0.74
11 A' 471 451 13.31 1.03 0.64 0.78
12 A" 3166 3035 12.86 54.87 0.75 0.86
13 A" 1500 1438 0.30 7.04 0.75 0.86
14 A" 1416 1357 31.07 9.76 0.75 0.86
15 A" 1175 1126 158.04 2.37 0.75 0.86
16 A" 966 926 59.69 3.78 0.75 0.86
17 A" 383 367 0.10 0.39 0.75 0.86
18 A" 248 238 0.07 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13413.3 cm-1
Scaled (by 0.9585) Zero Point Vibrational Energy (zpe) 12856.7 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 PBE1PBE/6-311G*
ABC
0.31688 0.30164 0.17336

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.322 0.163 0.000
C2 -0.898 1.030 0.000
H3 1.267 0.716 0.000
F4 0.322 -0.645 1.096
F5 0.322 -0.645 -1.096
H6 -1.789 0.398 0.000
H7 -0.913 1.664 0.889
H8 -0.913 1.664 -0.889

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.49771.09441.36181.36182.12422.13752.1375
C21.49772.18832.34492.34491.09181.09151.0915
H31.09442.18831.98621.98623.07222.53792.5379
F41.36182.34491.98622.19302.59752.62673.2858
F51.36182.34491.98622.19302.59753.28582.6267
H62.12421.09183.07222.59752.59751.77731.7773
H72.13751.09152.53792.62673.28581.77731.7770
H82.13751.09152.53793.28582.62671.77731.7770

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 109.237 C1 C2 H7 110.305
C1 C2 H8 110.305 C2 C1 H3 114.279
C2 C1 F4 110.088 C2 C1 F5 110.088
H3 C1 F4 107.425 H3 C1 F5 107.425
F4 C1 F5 107.257 H6 C2 H7 108.989
H6 C2 H8 108.989 H7 C2 H8 108.988
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.300      
2 C -0.733      
3 H 0.186      
4 F -0.239      
5 F -0.239      
6 H 0.247      
7 H 0.239      
8 H 0.239      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.302 2.118 0.000 2.139
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.489 0.596 0.000
y 0.596 -22.715 0.000
z 0.000 0.000 -25.066
Traceless
 xyz
x 2.402 0.596 0.000
y 0.596 0.563 0.000
z 0.000 0.000 -2.964
Polar
3z2-r2-5.928
x2-y21.226
xy0.596
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.570 -0.085 0.000
y -0.085 3.509 0.000
z 0.000 0.000 3.522


<r2> (average value of r2) Å2
<r2> 71.671
(<r2>)1/2 8.466