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

using model chemistry: B3PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/6-31G*
 hartrees
Energy at 0K-278.201313
Energy at 298.15K 
HF Energy-278.201313
Nuclear repulsion energy132.163366
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 B3PW91/6-31G*
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' 3174 3037 15.28      
2 A' 3089 2955 52.95      
3 A' 3083 2949 9.73      
4 A' 1511 1446 5.09      
5 A' 1459 1396 75.96      
6 A' 1409 1348 5.63      
7 A' 1181 1130 58.25      
8 A' 1161 1110 69.10      
9 A' 887 848 5.98      
10 A' 568 543 5.33      
11 A' 463 443 11.62      
12 A" 3171 3034 11.68      
13 A" 1514 1448 0.04      
14 A" 1424 1363 39.57      
15 A" 1186 1135 140.35      
16 A" 977 935 46.35      
17 A" 378 362 0.12      
18 A" 252 241 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 13443.3 cm-1
Scaled (by 0.9567) Zero Point Vibrational Energy (zpe) 12861.2 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 B3PW91/6-31G*
ABC
0.31372 0.30026 0.17205

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.324 0.161 0.000
C2 -0.903 1.031 0.000
H3 1.265 0.725 0.000
F4 0.324 -0.645 1.103
F5 0.324 -0.645 -1.103
H6 -1.794 0.397 0.000
H7 -0.917 1.666 0.890
H8 -0.917 1.666 -0.890

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50461.09651.36601.36602.13152.14452.1445
C21.50462.19002.35222.35221.09371.09361.0936
H31.09652.19001.99421.99423.07682.53822.5382
F41.36602.35221.99422.20512.60552.63223.2947
F51.36602.35221.99422.20512.60553.29472.6322
H62.13151.09373.07682.60552.60551.78121.7812
H72.14451.09362.53822.63223.29471.78121.7807
H82.14451.09362.53823.29472.63221.78121.7807

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 109.216 C1 C2 H7 110.250
C1 C2 H8 110.250 C2 C1 H3 113.768
C2 C1 F4 109.958 C2 C1 F5 109.958
H3 C1 F4 107.656 H3 C1 F5 107.656
F4 C1 F5 107.631 H6 C2 H7 109.043
H6 C2 H8 109.043 H7 C2 H8 109.013
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.440      
2 C -0.577      
3 H 0.141      
4 F -0.291      
5 F -0.291      
6 H 0.201      
7 H 0.188      
8 H 0.188      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.318 1.932 0.000 1.958
CHELPG        
AIM        
ESP -1.890 0.591 0.000 1.981


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.175 0.504 0.000
y 0.504 -22.260 0.000
z 0.000 0.000 -24.410
Traceless
 xyz
x 2.160 0.504 0.000
y 0.504 0.533 0.000
z 0.000 0.000 -2.692
Polar
3z2-r2-5.385
x2-y21.084
xy0.504
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.479 -0.066 0.000
y -0.066 3.436 0.000
z 0.000 0.000 3.446


<r2> (average value of r2) Å2
<r2> 71.776
(<r2>)1/2 8.472