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

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-277.572122
Energy at 298.15K 
HF Energy-276.942499
Nuclear repulsion energy131.864520
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 QCISD/6-31G*
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' 3183 3031 16.79      
2 A' 3124 2975 47.61      
3 A' 3092 2944 3.93      
4 A' 1536 1463 4.73      
5 A' 1495 1423 73.39      
6 A' 1438 1370 5.97      
7 A' 1200 1143 36.71      
8 A' 1186 1130 77.33      
9 A' 901 858 9.26      
10 A' 571 544 7.19      
11 A' 468 446 13.52      
12 A" 3180 3028 12.16      
13 A" 1537 1464 0.11      
14 A" 1449 1379 42.85      
15 A" 1210 1152 127.43      
16 A" 1000 952 48.69      
17 A" 384 366 0.03      
18 A" 261 248 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 13607.1 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 12958.0 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 QCISD/6-31G*
ABC
0.31165 0.29986 0.17161

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.327 0.170 0.000
C2 -0.910 1.026 0.000
H3 1.267 0.732 0.000
F4 0.327 -0.644 1.106
F5 0.327 -0.644 -1.106
H6 -1.788 0.373 0.000
H7 -0.929 1.659 0.893
H8 -0.929 1.659 -0.893

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50411.09561.37321.37322.12472.14302.1430
C21.50412.19642.35432.35431.09471.09471.0947
H31.09562.19642.00062.00063.07622.54552.5455
F41.37322.35432.00062.21122.59442.63213.2982
F51.37322.35432.00062.21122.59443.29822.6321
H62.12471.09473.07622.59442.59441.78571.7857
H72.14301.09472.54552.63213.29821.78571.7864
H82.14301.09472.54553.29822.63211.78571.7864

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 108.661 C1 C2 H7 110.104
C1 C2 H8 110.104 C2 C1 H3 114.401
C2 C1 F4 109.736 C2 C1 F5 109.736
H3 C1 F4 107.728 H3 C1 F5 107.728
F4 C1 F5 107.248 H6 C2 H7 109.295
H6 C2 H8 109.295 H7 C2 H8 109.362
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability