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

using model chemistry: HF/aug-cc-pVQZ

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/aug-cc-pVQZ
 hartrees
Energy at 0K-277.078838
Energy at 298.15K 
HF Energy-277.078838
Nuclear repulsion energy134.060110
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/aug-cc-pVQZ
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' 3265 2966 48.77 24.47 0.23 0.37
2 A' 3238 2941 17.61 114.43 0.34 0.51
3 A' 3182 2891 5.52 148.09 0.01 0.02
4 A' 1602 1456 11.13 4.30 0.73 0.84
5 A' 1576 1432 65.15 0.91 0.13 0.24
6 A' 1517 1378 2.66 0.53 0.44 0.61
7 A' 1271 1155 94.31 2.46 0.29 0.45
8 A' 1238 1125 64.60 3.77 0.43 0.61
9 A' 936 850 9.13 7.03 0.12 0.22
10 A' 622 565 6.66 0.65 0.29 0.45
11 A' 508 461 15.98 0.74 0.47 0.64
12 A" 3255 2958 19.74 47.30 0.75 0.86
13 A" 1604 1457 0.08 2.60 0.75 0.86
14 A" 1524 1384 26.60 3.42 0.75 0.86
15 A" 1268 1152 178.02 2.23 0.75 0.86
16 A" 1052 956 67.57 2.27 0.75 0.86
17 A" 410 373 0.08 0.25 0.75 0.86
18 A" 251 228 0.06 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14158.8 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 12863.2 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/aug-cc-pVQZ
ABC
0.32848 0.30309 0.17679

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/aug-cc-pVQZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.321 0.155 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 0.418 0.000
H7 -0.896 1.659 0.881
H8 -0.896 1.659 -0.881

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50131.08011.33951.33952.12412.12602.1260
C21.50132.17232.33422.33421.08141.08121.0812
H31.08012.17231.95941.95943.05072.50862.5086
F41.33952.33421.95942.15132.59322.61143.2574
F51.33952.33421.95942.15132.59323.25742.6114
H62.12411.08143.05072.59322.59321.76381.7638
H72.12601.08122.50862.61143.25741.76381.7621
H82.12601.08122.50863.25742.61141.76381.7621

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 109.588 C1 C2 H7 109.751
C1 C2 H8 109.751 C2 C1 H3 113.607
C2 C1 F4 110.378 C2 C1 F5 110.378
H3 C1 F4 107.679 H3 C1 F5 107.679
F4 C1 F5 106.843 H6 C2 H7 109.293
H6 C2 H8 109.293 H7 C2 H8 109.148
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.043      
2 C -0.926      
3 H 0.367      
4 F -0.672      
5 F -0.672      
6 H 0.264      
7 H 0.298      
8 H 0.298      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.319 2.335 0.000 2.357
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.309 0.585 0.000
y 0.585 -22.905 0.000
z 0.000 0.000 -25.463
Traceless
 xyz
x 2.875 0.585 0.000
y 0.585 0.481 0.000
z 0.000 0.000 -3.356
Polar
3z2-r2-6.712
x2-y21.596
xy0.585
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.958 -0.139 0.000
y -0.139 3.961 0.000
z 0.000 0.000 3.928


<r2> (average value of r2) Å2
<r2> 70.711
(<r2>)1/2 8.409