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

using model chemistry: QCISD/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/cc-pVDZ
 hartrees
Energy at 0K-277.646995
Energy at 298.15K 
HF Energy-276.960176
Nuclear repulsion energy131.838274
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/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' 3183 3053 15.73      
2 A' 3110 2984 52.53      
3 A' 3083 2958 5.62      
4 A' 1485 1424 12.10      
5 A' 1459 1400 77.34      
6 A' 1393 1337 2.86      
7 A' 1180 1132 98.83      
8 A' 1166 1119 23.43      
9 A' 885 849 10.23      
10 A' 573 549 6.62      
11 A' 470 451 13.86      
12 A" 3181 3052 11.98      
13 A" 1488 1428 0.11      
14 A" 1414 1357 38.30      
15 A" 1191 1143 147.68      
16 A" 976 936 43.40      
17 A" 379 364 0.01      
18 A" 242 232 0.09      

Unscaled Zero Point Vibrational Energy (zpe) 13428.1 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 12883.0 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/cc-pVDZ
ABC
0.31348 0.29794 0.17151

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.326 0.163 0.000
C2 -0.908 1.034 0.000
H3 1.272 0.733 0.000
F4 0.326 -0.647 1.102
F5 0.326 -0.647 -1.102
H6 -1.803 0.389 0.000
H7 -0.919 1.672 0.900
H8 -0.919 1.672 -0.900

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.51081.10471.36741.36742.14082.15282.1528
C21.51082.20132.35882.35881.10301.10251.1025
H31.10472.20132.00332.00333.09432.54772.5477
F41.36742.35882.00332.20322.61142.63953.3061
F51.36742.35882.00332.20322.61143.30612.6395
H62.14081.10303.09432.61142.61141.79901.7990
H72.15281.10252.54772.63953.30611.79901.7990
H82.15281.10252.54773.30612.63951.79901.7990

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 108.978 C1 C2 H7 109.945
C1 C2 H8 109.945 C2 C1 H3 113.721
C2 C1 F4 109.980 C2 C1 F5 109.980
H3 C1 F4 107.793 H3 C1 F5 107.793
F4 C1 F5 107.346 H6 C2 H7 109.306
H6 C2 H8 109.306 H7 C2 H8 109.344
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability