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

using model chemistry: PBE1PBE/3-21G

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/3-21G
 hartrees
Energy at 0K-276.508989
Energy at 298.15K 
HF Energy-276.508989
Nuclear repulsion energy130.852268
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/3-21G
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' 3189 3063 10.75 39.69 0.70 0.82
2 A' 3104 2981 28.96 151.34 0.11 0.19
3 A' 3103 2980 29.02 31.05 0.46 0.63
4 A' 1548 1487 5.82 20.03 0.75 0.86
5 A' 1475 1416 47.77 4.07 0.75 0.85
6 A' 1446 1389 29.96 3.14 0.75 0.86
7 A' 1192 1144 34.89 1.81 0.12 0.21
8 A' 1154 1109 84.06 5.24 0.73 0.85
9 A' 895 860 4.55 6.84 0.21 0.34
10 A' 548 526 6.87 1.01 0.58 0.74
11 A' 441 424 15.08 1.22 0.67 0.81
12 A" 3192 3066 6.07 51.56 0.75 0.86
13 A" 1555 1493 1.14 14.61 0.75 0.86
14 A" 1441 1384 42.80 12.58 0.75 0.86
15 A" 1221 1173 98.28 4.01 0.75 0.86
16 A" 1009 969 28.36 5.47 0.75 0.86
17 A" 353 339 0.01 0.36 0.75 0.86
18 A" 262 251 0.12 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13563.8 cm-1
Scaled (by 0.9604) Zero Point Vibrational Energy (zpe) 13026.7 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/3-21G
ABC
0.30137 0.30035 0.16875

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.329 0.173 0.000
C2 -0.913 1.020 0.000
H3 1.247 0.768 0.000
F4 0.329 -0.644 1.127
F5 0.329 -0.644 -1.127
H6 -1.787 0.362 0.000
H7 -0.938 1.649 0.892
H8 -0.938 1.649 -0.892

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50341.09371.39151.39152.12432.14032.1403
C21.50342.17452.36212.36211.09331.09221.0922
H31.09372.17452.02582.02583.06042.51922.5192
F41.39152.36212.02582.25372.59972.62983.3073
F51.39152.36212.02582.25372.59973.30732.6298
H62.12431.09333.06042.59972.59971.78091.7809
H72.14031.09222.51922.62983.30731.78091.7848
H82.14031.09222.51923.30732.62981.78091.7848

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 108.755 C1 C2 H7 110.088
C1 C2 H8 110.088 C2 C1 H3 112.757
C2 C1 F4 109.299 C2 C1 F5 109.299
H3 C1 F4 108.613 H3 C1 F5 108.613
F4 C1 F5 108.155 H6 C2 H7 109.148
H6 C2 H8 109.148 H7 C2 H8 109.590
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.372      
2 C -0.715      
3 H 0.212      
4 F -0.302      
5 F -0.302      
6 H 0.257      
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
  -0.318 2.137 0.000 2.161
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.183 0.640 0.000
y 0.640 -22.460 0.000
z 0.000 0.000 -24.962
Traceless
 xyz
x 2.527 0.640 0.000
y 0.640 0.613 0.000
z 0.000 0.000 -3.140
Polar
3z2-r2-6.281
x2-y21.276
xy0.640
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.011 -0.029 0.000
y -0.029 3.015 0.000
z 0.000 0.000 3.117


<r2> (average value of r2) Å2
<r2> 72.873
(<r2>)1/2 8.537