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

using model chemistry: PBE1PBE/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 PBE1PBE/6-31G*
 hartrees
Energy at 0K-278.017168
Energy at 298.15K 
HF Energy-278.017168
Nuclear repulsion energy132.523937
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/6-31G*
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' 3190 3032 13.16 44.94 0.73 0.84
2 A' 3103 2949 52.74 127.84 0.20 0.34
3 A' 3097 2943 7.71 70.64 0.04 0.07
4 A' 1513 1438 5.92 15.87 0.75 0.86
5 A' 1466 1393 82.37 3.42 0.69 0.82
6 A' 1412 1342 4.11 1.03 0.75 0.86
7 A' 1191 1132 77.33 2.54 0.31 0.48
8 A' 1171 1113 48.34 3.99 0.65 0.79
9 A' 895 850 5.58 6.25 0.25 0.41
10 A' 572 543 5.29 0.79 0.57 0.73
11 A' 467 444 12.01 0.93 0.63 0.77
12 A" 3189 3031 9.91 54.84 0.75 0.86
13 A" 1516 1441 0.00 10.59 0.75 0.86
14 A" 1430 1359 42.92 10.59 0.75 0.86
15 A" 1201 1141 145.82 2.96 0.75 0.86
16 A" 986 937 38.68 4.92 0.75 0.86
17 A" 380 361 0.11 0.22 0.75 0.86
18 A" 253 240 0.07 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13515.4 cm-1
Scaled (by 0.9503) Zero Point Vibrational Energy (zpe) 12843.7 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/6-31G*
ABC
0.31578 0.30174 0.17315

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.324 0.162 0.000
C2 -0.903 1.027 0.000
H3 1.263 0.728 0.000
F4 0.324 -0.643 1.098
F5 0.324 -0.643 -1.098
H6 -1.791 0.388 0.000
H7 -0.920 1.661 0.890
H8 -0.920 1.661 -0.890

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50191.09661.36121.36122.12762.14192.1419
C21.50192.18712.34522.34521.09361.09311.0931
H31.09662.18711.99161.99163.07332.53532.5353
F41.36122.34521.99162.19672.59692.62603.2875
F51.36122.34521.99162.19672.59693.28752.6260
H62.12761.09363.07332.59692.59691.78091.7809
H72.14191.09312.53532.62603.28751.78091.7806
H82.14191.09312.53533.28752.62601.78091.7806

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 109.107 C1 C2 H7 110.265
C1 C2 H8 110.265 C2 C1 H3 113.726
C2 C1 F4 109.892 C2 C1 F5 109.892
H3 C1 F4 107.768 H3 C1 F5 107.768
F4 C1 F5 107.585 H6 C2 H7 109.058
H6 C2 H8 109.058 H7 C2 H8 109.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.440      
2 C -0.589      
3 H 0.144      
4 F -0.292      
5 F -0.292      
6 H 0.205      
7 H 0.192      
8 H 0.192      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.316 1.916 0.000 1.942
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.236 0.509 0.000
y 0.509 -22.295 0.000
z 0.000 0.000 -24.419
Traceless
 xyz
x 2.121 0.509 0.000
y 0.509 0.533 0.000
z 0.000 0.000 -2.654
Polar
3z2-r2-5.307
x2-y21.059
xy0.509
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.465 -0.061 0.000
y -0.061 3.415 0.000
z 0.000 0.000 3.421


<r2> (average value of r2) Å2
<r2> 71.473
(<r2>)1/2 8.454