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

using model chemistry: mPW1PW91/daug-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 mPW1PW91/daug-cc-pVTZ
 hartrees
Energy at 0K-278.356865
Energy at 298.15K 
HF Energy-278.356865
Nuclear repulsion energy132.638793
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 mPW1PW91/daug-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' 3163 3163 11.27 35.41 0.69 0.82
2 A' 3084 3084 33.50 120.17 0.20 0.34
3 A' 3074 3074 2.36 143.74 0.01 0.01
4 A' 1484 1484 5.79 4.18 0.75 0.86
5 A' 1436 1436 69.99 0.70 0.43 0.60
6 A' 1389 1389 0.92 0.68 0.41 0.58
7 A' 1167 1167 69.37 3.09 0.19 0.32
8 A' 1154 1154 67.16 2.64 0.55 0.71
9 A' 881 881 6.57 6.40 0.12 0.22
10 A' 572 572 4.78 0.81 0.28 0.44
11 A' 469 469 12.32 0.85 0.56 0.72
12 A" 3160 3160 7.29 47.26 0.75 0.86
13 A" 1484 1484 0.83 2.97 0.75 0.86
14 A" 1385 1385 17.53 3.81 0.75 0.86
15 A" 1153 1153 160.87 2.02 0.75 0.86
16 A" 954 954 66.27 2.18 0.75 0.86
17 A" 383 383 0.29 0.37 0.75 0.86
18 A" 229 229 0.05 0.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13309.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13309.4 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 mPW1PW91/daug-cc-pVTZ
ABC
0.31809 0.30049 0.17328

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/daug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.320 0.163 0.000
C2 -0.895 1.038 0.000
H3 1.265 0.711 0.000
F4 0.320 -0.648 1.094
F5 0.320 -0.648 -1.094
H6 -1.789 0.416 0.000
H7 -0.896 1.669 0.886
H8 -0.896 1.669 -0.886

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.49761.09201.36251.36252.12482.12912.1291
C21.49762.18502.34922.34921.08861.08831.0883
H31.09202.18501.98451.98453.06862.52462.5246
F41.36252.34921.98452.18882.60432.62573.2824
F51.36252.34921.98452.18882.60433.28242.6257
H62.12481.08863.06862.60432.60431.77571.7757
H72.12911.08832.52462.62573.28241.77571.7727
H82.12911.08832.52463.28242.62571.77571.7727

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 109.477 C1 C2 H7 109.830
C1 C2 H8 109.830 C2 C1 H3 114.164
C2 C1 F4 110.355 C2 C1 F5 110.355
H3 C1 F4 107.389 H3 C1 F5 107.389
F4 C1 F5 106.872 H6 C2 H7 109.312
H6 C2 H8 109.312 H7 C2 H8 109.062
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/daug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 1.595      
2 C -1.324      
3 H 0.618      
4 F -0.794      
5 F -0.794      
6 H 0.187      
7 H 0.255      
8 H 0.255      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.365 2.232 0.000 2.261
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.472 0.477 0.000
y 0.477 -22.884 0.000
z 0.000 0.000 -25.371
Traceless
 xyz
x 2.655 0.477 0.000
y 0.477 0.538 0.000
z 0.000 0.000 -3.193
Polar
3z2-r2-6.386
x2-y21.412
xy0.477
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.363 -0.197 0.000
y -0.197 4.392 0.000
z 0.000 0.000 4.356


<r2> (average value of r2) Å2
<r2> 71.768
(<r2>)1/2 8.472