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

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-275.858393
Energy at 298.15K 
HF Energy-275.441819
Nuclear repulsion energy129.947541
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 MP2/3-21G
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' 3208 3062 14.99 32.81 0.67 0.80
2 A' 3153 3009 51.94 87.77 0.35 0.52
3 A' 3124 2982 1.43 78.83 0.02 0.05
4 A' 1590 1518 4.13 19.92 0.75 0.86
5 A' 1511 1442 30.02 3.53 0.75 0.85
6 A' 1485 1418 36.10 4.19 0.75 0.86
7 A' 1211 1156 31.05 2.17 0.19 0.32
8 A' 1147 1095 79.94 5.76 0.74 0.85
9 A' 891 850 7.11 7.52 0.18 0.30
10 A' 549 524 8.41 1.13 0.54 0.70
11 A' 444 424 16.08 1.31 0.67 0.80
12 A" 3210 3063 7.23 47.26 0.75 0.86
13 A" 1596 1523 1.03 15.12 0.75 0.86
14 A" 1487 1419 44.33 11.59 0.75 0.86
15 A" 1235 1179 73.96 4.82 0.75 0.86
16 A" 1022 976 38.01 6.36 0.75 0.86
17 A" 357 341 0.02 0.35 0.75 0.86
18 A" 266 254 0.15 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13742.3 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 13117.0 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 MP2/3-21G
ABC
0.29648 0.29639 0.16612

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.331 0.177 0.000
C2 -0.921 1.027 0.000
H3 1.249 0.764 0.000
F4 0.331 -0.648 1.137
F5 0.331 -0.648 -1.137
H6 -1.791 0.368 0.000
H7 -0.943 1.655 0.892
H8 -0.943 1.655 -0.892

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.51351.08991.40481.40482.13062.14592.1459
C21.51352.18582.38062.38061.09211.09111.0911
H31.08992.18582.03232.03233.06582.52902.5290
F41.40482.38062.03232.27452.61302.64313.3236
F51.40482.38062.03232.27452.61303.32362.6431
H62.13061.09213.06582.61302.61301.78101.7810
H72.14591.09112.52902.64313.32361.78101.7850
H82.14591.09112.52903.32362.64311.78101.7850

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 108.628 C1 C2 H7 109.884
C1 C2 H8 109.884 C2 C1 H3 113.188
C2 C1 F4 109.267 C2 C1 F5 109.267
H3 C1 F4 108.446 H3 C1 F5 108.446
F4 C1 F5 108.100 H6 C2 H7 109.331
H6 C2 H8 109.331 H7 C2 H8 109.761
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability