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

using model chemistry: QCISD/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-277.946545
Energy at 298.15K 
HF Energy-277.059159
Nuclear repulsion energy132.557201
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/aug-cc-pVTZ
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' 3163 3044 15.04      
2 A' 3114 2997 26.63      
3 A' 3073 2957 2.75      
4 A' 1509 1452 5.02      
5 A' 1466 1411 64.18      
6 A' 1414 1361 2.04      
7 A' 1183 1138 66.70      
8 A' 1173 1128 57.36      
9 A' 888 855 8.05      
10 A' 575 553 5.65      
11 A' 473 455 13.27      
12 A" 3160 3041 8.99      
13 A" 1510 1453 0.48      
14 A" 1408 1355 20.92      
15 A" 1177 1133 153.55      
16 A" 977 940 61.44      
17 A" 385 371 0.13      
18 A" 234 226 0.06      

Unscaled Zero Point Vibrational Energy (zpe) 13440.3 cm-1
Scaled (by 0.9624) Zero Point Vibrational Energy (zpe) 12935.0 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/aug-cc-pVTZ
ABC
0.31788 0.29995 0.17322

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.323 0.166 0.000
C2 -0.903 1.034 0.000
H3 1.263 0.718 0.000
F4 0.323 -0.647 1.094
F5 0.323 -0.647 -1.094
H6 -1.789 0.400 0.000
H7 -0.907 1.664 0.888
H8 -0.907 1.664 -0.888

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50221.09011.36331.36332.12562.13212.1321
C21.50222.18962.35072.35071.08931.08911.0891
H31.09012.18961.98601.98603.06942.52912.5291
F41.36332.35071.98602.18822.59942.62603.2838
F51.36332.35071.98602.18822.59943.28382.6260
H62.12561.08933.06942.59942.59941.77861.7786
H72.13211.08912.52912.62603.28381.77861.7767
H82.13211.08912.52913.28382.62601.77861.7767

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 109.175 C1 C2 H7 109.699
C1 C2 H8 109.699 C2 C1 H3 114.336
C2 C1 F4 110.145 C2 C1 F5 110.145
H3 C1 F4 107.574 H3 C1 F5 107.574
F4 C1 F5 106.749 H6 C2 H7 109.470
H6 C2 H8 109.470 H7 C2 H8 109.314
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability