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

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-277.972793
Energy at 298.15K-277.967549
HF Energy-276.936336
Nuclear repulsion energy133.674990
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3308 3308 69.86 23.30 0.07 0.12
2 A' 3287 3287 15.01 123.50 0.50 0.67
3 A' 3213 3213 6.35 99.48 0.03 0.05
4 A' 1620 1620 11.07 15.15 0.75 0.85
5 A' 1590 1590 77.17 2.20 0.39 0.56
6 A' 1525 1525 6.72 0.80 0.75 0.86
7 A' 1274 1274 103.15 2.18 0.46 0.63
8 A' 1245 1245 60.74 5.47 0.56 0.72
9 A' 940 940 11.72 6.75 0.23 0.37
10 A' 617 617 8.06 0.81 0.60 0.75
11 A' 505 505 17.46 0.84 0.56 0.72
12 A" 3296 3296 20.88 58.68 0.75 0.86
13 A" 1624 1624 0.46 9.62 0.75 0.86
14 A" 1549 1549 43.60 9.74 0.75 0.86
15 A" 1287 1287 173.49 2.97 0.75 0.86
16 A" 1063 1063 59.32 4.93 0.75 0.86
17 A" 406 406 0.01 0.18 0.75 0.86
18 A" 256 256 0.09 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 14300.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 14300.4 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 CBS-Q
ABC
0.31364 0.30012 0.17213

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.325 0.158 0.000
C2 -0.904 1.027 0.000
H3 1.254 0.714 0.000
F4 0.325 -0.640 1.081
F5 0.325 -0.640 -1.081
H6 -1.789 0.396 0.000
H7 -0.916 1.656 0.885
H8 -0.916 1.656 -0.885

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50511.08271.34361.34362.12672.13692.1369
C21.50512.18042.33612.33611.08601.08581.0858
H31.08272.18041.96601.96603.05872.52522.5252
F41.34362.33611.96602.16182.59012.61743.2674
F51.34362.33611.96602.16182.59013.26742.6174
H62.12671.08603.05872.59012.59011.76971.7697
H72.13691.08582.52522.61743.26741.76971.7695
H82.13691.08582.52523.26742.61741.76971.7695

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 109.253 C1 C2 H7 110.075
C1 C2 H8 110.075 C2 C1 H3 113.830
C2 C1 F4 110.052 C2 C1 F5 110.052
H3 C1 F4 107.767 H3 C1 F5 107.767
F4 C1 F5 107.118 H6 C2 H7 109.140
H6 C2 H8 109.140 H7 C2 H8 109.136
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability