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

using model chemistry: HF/aug-cc-pVTZ

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-pVTZ
 hartrees
Energy at 0K-277.060220
Energy at 298.15K 
HF Energy-277.060220
Nuclear repulsion energy133.981251
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-pVTZ
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 2973 49.25 24.52 0.20 0.34
2 A' 3239 2949 16.23 114.63 0.35 0.51
3 A' 3182 2897 5.49 148.25 0.01 0.02
4 A' 1602 1459 11.04 4.31 0.73 0.84
5 A' 1576 1435 65.15 0.91 0.13 0.24
6 A' 1516 1380 2.98 0.54 0.44 0.61
7 A' 1272 1158 95.35 2.47 0.30 0.47
8 A' 1239 1128 63.16 3.75 0.43 0.60
9 A' 936 852 9.10 7.01 0.12 0.22
10 A' 621 565 6.75 0.65 0.30 0.46
11 A' 508 462 16.08 0.74 0.48 0.65
12 A" 3256 2964 19.63 47.44 0.75 0.86
13 A" 1604 1460 0.09 2.64 0.75 0.86
14 A" 1521 1385 26.99 3.38 0.75 0.86
15 A" 1269 1155 178.56 2.28 0.75 0.86
16 A" 1053 959 66.81 2.28 0.75 0.86
17 A" 411 374 0.09 0.25 0.75 0.86
18 A" 252 229 0.06 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14159.6 cm-1
Scaled (by 0.9104) Zero Point Vibrational Energy (zpe) 12890.9 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-pVTZ
ABC
0.32804 0.30283 0.17662

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.321 0.156 0.000
C2 -0.898 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 -0.897 1.660 0.881
H8 -0.897 1.660 -0.881

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50141.08041.34071.34072.12432.12642.1264
C21.50142.17352.33522.33521.08181.08171.0817
H31.08042.17351.96071.96073.05202.51012.5101
F41.34072.33521.96072.15272.59362.61253.2589
F51.34072.33521.96072.15272.59363.25892.6125
H62.12431.08183.05202.59362.59361.76471.7647
H72.12641.08172.51012.61253.25891.76471.7630
H82.12641.08172.51013.25892.61251.76471.7630

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 109.573 C1 C2 H7 109.741
C1 C2 H8 109.741 C2 C1 H3 113.679
C2 C1 F4 110.370 C2 C1 F5 110.370
H3 C1 F4 107.671 H3 C1 F5 107.671
F4 C1 F5 106.795 H6 C2 H7 109.305
H6 C2 H8 109.305 H7 C2 H8 109.158
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.613      
2 C -1.011      
3 H 0.339      
4 F -0.441      
5 F -0.441      
6 H 0.285      
7 H 0.328      
8 H 0.328      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.321 2.349 0.000 2.370
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.318 0.590 0.000
y 0.590 -22.928 0.000
z 0.000 0.000 -25.502
Traceless
 xyz
x 2.897 0.590 0.000
y 0.590 0.481 0.000
z 0.000 0.000 -3.379
Polar
3z2-r2-6.758
x2-y21.611
xy0.590
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.953 -0.140 0.000
y -0.140 3.960 0.000
z 0.000 0.000 3.929


<r2> (average value of r2) Å2
<r2> 70.782
(<r2>)1/2 8.413