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

using model chemistry: HF/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/Def2TZVPP
 hartrees
Energy at 0K-277.070284
Energy at 298.15K 
HF Energy-277.070284
Nuclear repulsion energy134.009285
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 HF/Def2TZVPP
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' 3268 2962 51.36 24.61 0.24 0.39
2 A' 3241 2938 19.19 118.47 0.38 0.55
3 A' 3185 2887 5.72 137.01 0.01 0.03
4 A' 1602 1452 12.39 6.10 0.73 0.84
5 A' 1577 1429 67.63 1.35 0.16 0.28
6 A' 1517 1375 2.71 0.49 0.72 0.84
7 A' 1273 1154 101.58 2.09 0.43 0.61
8 A' 1238 1122 60.58 3.99 0.42 0.59
9 A' 936 848 9.08 6.29 0.17 0.30
10 A' 622 563 6.92 0.69 0.44 0.61
11 A' 508 460 15.95 0.76 0.54 0.70
12 A" 3259 2954 20.21 50.93 0.75 0.86
13 A" 1604 1454 0.03 4.08 0.75 0.86
14 A" 1526 1383 28.92 4.71 0.75 0.86
15 A" 1272 1153 179.41 2.27 0.75 0.86
16 A" 1054 956 63.86 3.18 0.75 0.86
17 A" 410 372 0.07 0.21 0.75 0.86
18 A" 252 228 0.07 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14171.7 cm-1
Scaled (by 0.9064) Zero Point Vibrational Energy (zpe) 12845.2 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 HF/Def2TZVPP
ABC
0.32811 0.30300 0.17666

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.321 0.156 0.000
C2 -0.897 1.033 0.000
H3 1.251 0.706 0.000
F4 0.321 -0.643 1.076
F5 0.321 -0.643 -1.076
H6 -1.787 0.417 0.000
H7 -0.896 1.660 0.881
H8 -0.896 1.660 -0.881

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50131.08031.34021.34022.12412.12652.1265
C21.50132.17262.33472.33471.08181.08161.0816
H31.08032.17261.96021.96023.05122.50932.5093
F41.34022.33471.96022.15262.59342.61213.2584
F51.34022.33471.96022.15262.59343.25842.6121
H62.12411.08183.05122.59342.59341.76451.7645
H72.12651.08162.50932.61213.25841.76451.7628
H82.12651.08162.50933.25842.61211.76451.7628

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 109.562 C1 C2 H7 109.760
C1 C2 H8 109.760 C2 C1 H3 113.615
C2 C1 F4 110.372 C2 C1 F5 110.372
H3 C1 F4 107.675 H3 C1 F5 107.675
F4 C1 F5 106.855 H6 C2 H7 109.295
H6 C2 H8 109.295 H7 C2 H8 109.152
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.508      
2 C -0.162      
3 H 0.013      
4 F -0.280      
5 F -0.280      
6 H 0.075      
7 H 0.064      
8 H 0.064      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.317 2.323 0.000 2.344
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.300 0.582 0.000
y 0.582 -22.865 0.000
z 0.000 0.000 -25.393
Traceless
 xyz
x 2.829 0.582 0.000
y 0.582 0.481 0.000
z 0.000 0.000 -3.310
Polar
3z2-r2-6.620
x2-y21.565
xy0.582
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.694 -0.092 0.000
y -0.092 3.712 0.000
z 0.000 0.000 3.712


<r2> (average value of r2) Å2
<r2> 70.724
(<r2>)1/2 8.410