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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-278.048058
Energy at 298.15K 
HF Energy-277.852075
Nuclear repulsion energy132.019414
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
(Å4/u)
Dep P Dep U
1 A' 3197 3035 16.42 41.15 0.73 0.84
2 A' 3130 2971 52.78 103.29 0.28 0.43
3 A' 3107 2949 3.78 88.72 0.02 0.04
4 A' 1536 1458 4.20 15.77 0.75 0.86
5 A' 1483 1408 68.83 3.52 0.69 0.82
6 A' 1433 1360 8.61 1.25 0.75 0.85
7 A' 1193 1132 34.21 1.67 0.05 0.10
8 A' 1170 1110 87.06 5.17 0.75 0.86
9 A' 894 848 8.23 6.67 0.23 0.38
10 A' 569 540 6.39 0.82 0.51 0.68
11 A' 465 441 12.19 1.02 0.65 0.79
12 A" 3193 3031 11.96 53.90 0.75 0.86
13 A" 1538 1460 0.09 11.54 0.75 0.86
14 A" 1443 1370 39.67 9.57 0.75 0.86
15 A" 1193 1132 126.27 3.15 0.75 0.86
16 A" 987 937 56.69 5.27 0.75 0.86
17 A" 382 362 0.06 0.23 0.75 0.86
18 A" 257 244 0.08 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13583.7 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 12893.7 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 B2PLYP/6-31G*
ABC
0.31229 0.30032 0.17174

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 0.326 0.166 0.000
C2 -0.907 1.028 0.000
H3 1.263 0.727 0.000
F4 0.326 -0.644 1.105
F5 0.326 -0.644 -1.105
H6 -1.789 0.385 0.000
H7 -0.924 1.661 0.890
H8 -0.924 1.661 -0.890

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50401.09301.37051.37052.12572.14142.1414
C21.50402.19102.35332.35331.09151.09151.0915
H31.09302.19101.99561.99563.07132.53892.5389
F41.37052.35331.99562.21032.59852.63053.2943
F51.37052.35331.99562.21032.59853.29432.6305
H62.12571.09153.07132.59852.59851.77921.7792
H72.14141.09152.53892.63053.29431.77921.7793
H82.14141.09152.53893.29432.63051.77921.7793

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 108.928 C1 C2 H7 110.170
C1 C2 H8 110.170 C2 C1 H3 114.123
C2 C1 F4 109.820 C2 C1 F5 109.820
H3 C1 F4 107.675 H3 C1 F5 107.675
F4 C1 F5 107.491 H6 C2 H7 109.182
H6 C2 H8 109.182 H7 C2 H8 109.188
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 0.480      
2 C -0.524      
3 H 0.130      
4 F -0.307      
5 F -0.307      
6 H 0.185      
7 H 0.172      
8 H 0.172      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.313 1.985 0.000 2.009
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.391 0.541 0.005
y 0.541 -22.490 -0.009
z 0.005 -0.009 -24.692
Traceless
 xyz
x 2.200 0.541 0.005
y 0.541 0.552 -0.009
z 0.005 -0.009 -2.752
Polar
3z2-r2-5.504
x2-y21.098
xy0.541
xz0.005
yz-0.009


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.408 -0.054 -0.000
y -0.054 3.392 0.002
z -0.000 0.002 3.422


<r2> (average value of r2) Å2
<r2> 72.000
(<r2>)1/2 8.485