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

using model chemistry: HF/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 HF/6-31G
 hartrees
Energy at 0K-276.857769
Energy at 298.15K 
HF Energy-276.857769
Nuclear repulsion energy131.336740
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/6-31G
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' 3362 3035 42.84 60.34 0.15 0.26
2 A' 3312 2990 3.61 82.86 0.70 0.82
3 A' 3225 2912 3.71 112.24 0.02 0.04
4 A' 1639 1480 5.78 18.53 0.75 0.86
5 A' 1603 1447 42.25 2.60 0.65 0.79
6 A' 1546 1396 32.30 1.92 0.74 0.85
7 A' 1282 1158 35.06 3.06 0.27 0.42
8 A' 1234 1114 106.65 6.39 0.72 0.84
9 A' 943 851 19.54 8.80 0.16 0.28
10 A' 583 527 15.06 1.07 0.44 0.61
11 A' 476 430 23.46 1.46 0.68 0.81
12 A" 3309 2988 12.18 60.35 0.75 0.86
13 A" 1643 1483 3.07 15.30 0.75 0.86
14 A" 1530 1381 42.15 8.40 0.75 0.86
15 A" 1283 1158 116.11 4.81 0.75 0.86
16 A" 1057 954 79.44 7.43 0.75 0.86
17 A" 401 362 0.00 0.39 0.75 0.86
18 A" 252 227 0.11 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14339.6 cm-1
Scaled (by 0.9029) Zero Point Vibrational Energy (zpe) 12947.2 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/6-31G
ABC
0.30699 0.29884 0.16972

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.325 0.181 0.000
C2 -0.904 1.032 0.000
H3 1.255 0.715 0.000
F4 0.325 -0.650 1.116
F5 0.325 -0.650 -1.116
H6 -1.781 0.401 0.000
H7 -0.922 1.659 0.880
H8 -0.922 1.659 -0.880

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.49441.07311.39181.39182.11752.12442.1244
C21.49442.18232.36332.36331.08071.08081.0808
H31.07312.18231.99411.99413.05292.53112.5311
F41.39182.36331.99412.23272.60532.63473.2973
F51.39182.36331.99412.23272.60533.29732.6347
H62.11751.08073.05292.60532.60531.75911.7591
H72.12441.08082.53112.63473.29731.75911.7606
H82.12441.08082.53113.29732.63471.75911.7606

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 109.586 C1 C2 H7 110.130
C1 C2 H8 110.130 C2 C1 H3 115.440
C2 C1 F4 109.887 C2 C1 F5 109.887
H3 C1 F4 107.287 H3 C1 F5 107.287
F4 C1 F5 106.658 H6 C2 H7 108.945
H6 C2 H8 108.945 H7 C2 H8 109.077
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.642      
2 C -0.524      
3 H 0.179      
4 F -0.439      
5 F -0.439      
6 H 0.208      
7 H 0.187      
8 H 0.187      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.384 3.064 0.000 3.088
CHELPG -2.878 1.149 0.000 3.099
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.018 0.768 0.000
y 0.768 -23.117 0.000
z 0.000 0.000 -26.676
Traceless
 xyz
x 3.879 0.768 0.000
y 0.768 0.730 0.000
z 0.000 0.000 -4.609
Polar
3z2-r2-9.218
x2-y22.100
xy0.768
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.926 -0.015 0.000
y -0.015 3.005 0.000
z 0.000 0.000 3.167


<r2> (average value of r2) Å2
<r2> 72.978
(<r2>)1/2 8.543