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All results from a given calculation for CH3CHF2 (Ethane, 1,1-difluoro-)

using model chemistry: B3PW91/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/STO-3G
 hartrees
Energy at 0K-274.377469
Energy at 298.15K 
HF Energy-274.377469
Nuclear repulsion energy128.049708
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 B3PW91/STO-3G
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' 3517 3112 0.07 24.43 0.75 0.86
2 A' 3334 2951 0.16 38.44 0.02 0.04
3 A' 3162 2799 35.04 40.98 0.35 0.52
4 A' 1667 1475 2.94 15.61 0.75 0.86
5 A' 1541 1364 9.41 3.36 0.72 0.84
6 A' 1463 1295 34.64 6.15 0.72 0.84
7 A' 1206 1067 28.76 2.58 0.44 0.61
8 A' 1158 1024 28.79 5.57 0.66 0.80
9 A' 907 803 0.72 5.92 0.21 0.35
10 A' 548 485 2.41 0.85 0.54 0.70
11 A' 438 387 4.55 1.48 0.67 0.81
12 A" 3513 3109 0.01 26.75 0.75 0.86
13 A" 1669 1477 0.87 12.93 0.75 0.86
14 A" 1471 1302 52.80 5.44 0.75 0.86
15 A" 1254 1110 39.15 4.46 0.75 0.86
16 A" 1027 909 2.89 4.78 0.75 0.86
17 A" 356 315 0.01 0.46 0.75 0.86
18 A" 168 148 0.01 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14198.7 cm-1
Scaled (by 0.885) Zero Point Vibrational Energy (zpe) 12565.8 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 B3PW91/STO-3G
ABC
0.29656 0.27719 0.15986

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/STO-3G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.332 0.146 0.000
C2 -0.927 1.094 0.000
H3 1.273 0.777 0.000
F4 0.332 -0.677 1.137
F5 0.332 -0.677 -1.137
H6 -1.851 0.499 0.000
H7 -0.910 1.733 0.895
H8 -0.910 1.733 -0.895

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.57651.13311.40331.40332.21152.20462.2046
C21.57652.22252.45252.45251.09901.09911.0991
H31.13312.22252.07172.07173.13612.54472.5447
F41.40332.45252.07172.27422.72802.72123.3873
F51.40332.45252.07172.27422.72803.38732.7212
H62.21151.09903.13612.72802.72801.79101.7910
H72.20461.09912.54472.72123.38731.79101.7892
H82.20461.09912.54473.38732.72121.79101.7892

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 110.224 C1 C2 H7 109.682
C1 C2 H8 109.682 C2 C1 H3 109.124
C2 C1 F4 110.650 C2 C1 F5 110.650
H3 C1 F4 109.065 H3 C1 F5 109.065
F4 C1 F5 108.252 H6 C2 H7 109.130
H6 C2 H8 109.130 H7 C2 H8 108.969
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.136      
2 C -0.253      
3 H 0.064      
4 F -0.106      
5 F -0.106      
6 H 0.089      
7 H 0.088      
8 H 0.088      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.171 1.137 0.000 1.150
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -19.874 0.340 0.000
y 0.340 -20.431 0.000
z 0.000 0.000 -21.853
Traceless
 xyz
x 1.268 0.340 0.000
y 0.340 0.433 0.000
z 0.000 0.000 -1.701
Polar
3z2-r2-3.402
x2-y20.557
xy0.340
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.735 -0.072 0.000
y -0.072 1.903 0.000
z 0.000 0.000 2.000


<r2> (average value of r2) Å2
<r2> 74.729
(<r2>)1/2 8.645