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

using model chemistry: MP2=FULL/6-31G(2df,p)

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=FULL/6-31G(2df,p)
 hartrees
Energy at 0K-277.760930
Energy at 298.15K 
HF Energy-276.963166
Nuclear repulsion energy133.227187
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=FULL/6-31G(2df,p)
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' 3245 3050 5.90 37.81 0.74 0.85
2 A' 3137 2948 11.52 138.67 0.04 0.08
3 A' 3135 2947 36.82 30.62 0.72 0.84
4 A' 1526 1434 5.46 12.10 0.75 0.86
5 A' 1473 1385 76.07 1.82 0.60 0.75
6 A' 1419 1334 0.55 0.68 0.75 0.86
7 A' 1203 1131 85.19 3.09 0.47 0.64
8 A' 1183 1112 27.69 2.87 0.40 0.57
9 A' 901 847 5.34 6.07 0.19 0.32
10 A' 580 545 4.74 0.69 0.43 0.60
11 A' 474 446 11.43 0.77 0.63 0.77
12 A" 3243 3048 4.59 44.76 0.75 0.86
13 A" 1530 1438 0.00 7.94 0.75 0.86
14 A" 1444 1357 28.52 7.62 0.75 0.86
15 A" 1212 1139 142.09 1.81 0.75 0.86
16 A" 994 935 32.26 3.48 0.75 0.86
17 A" 383 360 0.10 0.21 0.75 0.86
18 A" 254 239 0.07 0.01 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 13668.5 cm-1
Scaled (by 0.9399) Zero Point Vibrational Energy (zpe) 12847.0 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=FULL/6-31G(2df,p)
ABC
0.31955 0.30440 0.17496

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.324 0.159 0.000
C2 -0.902 1.022 0.000
H3 1.255 0.729 0.000
F4 0.324 -0.639 1.092
F5 0.324 -0.639 -1.092
H6 -1.782 0.383 0.000
H7 -0.914 1.651 0.887
H8 -0.914 1.651 -0.887

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.49871.09201.35251.35252.11752.13102.1310
C21.49872.17692.33512.33511.08741.08701.0870
H31.09202.17691.98281.98283.05682.51772.5177
F41.35252.33511.98282.18322.58272.61073.2692
F51.35252.33511.98282.18322.58273.26922.6107
H62.11751.08743.05682.58272.58271.77391.7739
H72.13101.08702.51772.61073.26921.77391.7733
H82.13101.08702.51773.26922.61071.77391.7733

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 108.893 C1 C2 H7 109.983
C1 C2 H8 109.983 C2 C1 H3 113.408
C2 C1 F4 109.864 C2 C1 F5 109.864
H3 C1 F4 107.943 H3 C1 F5 107.943
F4 C1 F5 107.632 H6 C2 H7 109.331
H6 C2 H8 109.331 H7 C2 H8 109.302
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability