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

using model chemistry: QCISD/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-277.719332
Energy at 298.15K 
HF Energy-276.982786
Nuclear repulsion energy131.100203
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/daug-cc-pVDZ
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' 3157 3157 20.25      
2 A' 3121 3121 23.36      
3 A' 3058 3058 3.69      
4 A' 1478 1478 5.91      
5 A' 1443 1443 62.01      
6 A' 1383 1383 1.89      
7 A' 1161 1161 40.92      
8 A' 1152 1152 73.79      
9 A' 870 870 11.61      
10 A' 558 558 6.09      
11 A' 459 459 13.04      
12 A" 3150 3150 11.26      
13 A" 1478 1478 0.36      
14 A" 1380 1380 18.26      
15 A" 1144 1144 146.25      
16 A" 949 949 72.29      
17 A" 379 379 0.13      
18 A" 234 234 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 13276.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 13276.4 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 QCISD/daug-cc-pVDZ
ABC
0.31028 0.29424 0.16949

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.324 0.170 0.000
C2 -0.908 1.046 0.000
H3 1.279 0.719 0.000
F4 0.324 -0.655 1.108
F5 0.324 -0.655 -1.108
H6 -1.807 0.411 0.000
H7 -0.905 1.683 0.898
H8 -0.905 1.683 -0.898

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.51141.10101.38151.38152.14502.14662.1466
C21.51142.21062.37462.37461.10081.10121.1012
H31.10102.21062.00682.00683.10112.55062.5506
F41.38152.37462.00682.21552.62822.65063.3172
F51.38152.37462.00682.21552.62823.31722.6506
H62.14501.10083.10112.62822.62821.79941.7994
H72.14661.10122.55062.65063.31721.79941.7958
H82.14661.10122.55063.31722.65061.79941.7958

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 109.392 C1 C2 H7 109.491
C1 C2 H8 109.491 C2 C1 H3 114.689
C2 C1 F4 110.254 C2 C1 F5 110.254
H3 C1 F4 107.336 H3 C1 F5 107.336
F4 C1 F5 106.606 H6 C2 H7 109.602
H6 C2 H8 109.602 H7 C2 H8 109.249
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability