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

using model chemistry: HF/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-276.963846
Energy at 298.15K 
HF Energy-276.963846
Nuclear repulsion energy133.440045
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/6-31+G**
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' 3307 2990 61.61 37.20 0.03 0.06
2 A' 3284 2970 1.98 110.72 0.58 0.73
3 A' 3206 2899 6.49 124.11 0.02 0.03
4 A' 1607 1453 12.33 9.90 0.74 0.85
5 A' 1583 1431 68.41 1.45 0.19 0.32
6 A' 1517 1372 7.28 0.73 0.70 0.83
7 A' 1266 1144 92.20 2.30 0.26 0.41
8 A' 1243 1124 66.98 4.89 0.63 0.77
9 A' 938 848 12.65 7.06 0.20 0.33
10 A' 611 552 8.56 0.63 0.46 0.63
11 A' 502 454 17.96 0.87 0.56 0.72
12 A" 3285 2970 18.84 58.29 0.75 0.86
13 A" 1608 1454 0.09 6.27 0.75 0.86
14 A" 1523 1377 36.91 6.16 0.75 0.86
15 A" 1268 1146 184.43 2.52 0.75 0.86
16 A" 1052 952 75.00 4.64 0.75 0.86
17 A" 410 370 0.03 0.18 0.75 0.86
18 A" 252 228 0.07 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14230.1 cm-1
Scaled (by 0.9042) Zero Point Vibrational Energy (zpe) 12866.8 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 HF/6-31+G**
ABC
0.32381 0.30200 0.17532

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.323 0.162 0.000
C2 -0.901 1.030 0.000
H3 1.255 0.707 0.000
F4 0.323 -0.644 1.084
F5 0.323 -0.644 -1.084
H6 -1.788 0.408 0.000
H7 -0.906 1.659 0.883
H8 -0.906 1.659 -0.883

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50141.08011.35011.35012.12532.12842.1284
C21.50142.18112.34022.34021.08331.08351.0835
H31.08012.18111.96651.96653.05812.52122.5212
F41.35012.34021.96652.16752.59552.61723.2676
F51.35012.34021.96652.16752.59553.26762.6172
H62.12531.08333.05812.59552.59551.76691.7669
H72.12841.08352.52122.61723.26761.76691.7658
H82.12841.08352.52123.26762.61721.76691.7658

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 109.564 C1 C2 H7 109.791
C1 C2 H8 109.791 C2 C1 H3 114.337
C2 C1 F4 110.189 C2 C1 F5 110.189
H3 C1 F4 107.515 H3 C1 F5 107.515
F4 C1 F5 106.775 H6 C2 H7 109.267
H6 C2 H8 109.267 H7 C2 H8 109.145
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.658      
2 C -0.462      
3 H 0.114      
4 F -0.391      
5 F -0.391      
6 H 0.166      
7 H 0.153      
8 H 0.153      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.329 2.527 0.000 2.548
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.396 0.648 0.000
y 0.648 -23.100 0.000
z 0.000 0.000 -25.843
Traceless
 xyz
x 3.076 0.648 0.000
y 0.648 0.520 0.000
z 0.000 0.000 -3.595
Polar
3z2-r2-7.191
x2-y21.704
xy0.648
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.555 -0.063 0.000
y -0.063 3.584 0.000
z 0.000 0.000 3.610


<r2> (average value of r2) Å2
<r2> 71.288
(<r2>)1/2 8.443