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

using model chemistry: QCISD(T)/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(T)/cc-pVDZ
 hartrees
Energy at 0K-277.660746
Energy at 298.15K 
HF Energy-276.959789
Nuclear repulsion energy131.608890
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(T)/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' 3170 3021        
2 A' 3089 2944        
3 A' 3069 2925        
4 A' 1475 1406        
5 A' 1445 1377        
6 A' 1380 1316        
7 A' 1166 1112        
8 A' 1156 1102        
9 A' 876 835        
10 A' 566 540        
11 A' 464 442        
12 A" 3168 3020        
13 A" 1478 1409        
14 A" 1402 1336        
15 A" 1177 1121        
16 A" 965 920        
17 A" 375 357        
18 A" 239 228        

Unscaled Zero Point Vibrational Energy (zpe) 13329.4 cm-1
Scaled (by 0.9531) Zero Point Vibrational Energy (zpe) 12704.3 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(T)/cc-pVDZ
ABC
0.31189 0.29739 0.17093

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.327 0.164 0.000
C2 -0.911 1.034 0.000
H3 1.274 0.735 0.000
F4 0.327 -0.647 1.105
F5 0.327 -0.647 -1.105
H6 -1.804 0.386 0.000
H7 -0.922 1.672 0.901
H8 -0.922 1.672 -0.901

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.51271.10651.37031.37032.14262.15542.1554
C21.51272.20522.36172.36171.10431.10381.1038
H31.10652.20522.00712.00713.09842.55212.5521
F41.37032.36172.00712.20912.61322.64203.3105
F51.37032.36172.00712.20912.61323.31052.6420
H62.14261.10433.09842.61322.61321.80121.8012
H72.15541.10382.55212.64203.31051.80121.8015
H82.15541.10382.55213.31052.64201.80121.8015

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 108.919 C1 C2 H7 109.941
C1 C2 H8 109.941 C2 C1 H3 113.791
C2 C1 F4 109.911 C2 C1 F5 109.911
H3 C1 F4 107.789 H3 C1 F5 107.789
F4 C1 F5 107.427 H6 C2 H7 109.324
H6 C2 H8 109.324 H7 C2 H8 109.376
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability