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

using model chemistry: CCSD/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 CCSD/cc-pVTZ
 hartrees
Energy at 0K-277.922035
Energy at 298.15K 
HF Energy-277.055194
Nuclear repulsion energy132.849848
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 CCSD/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' 3171 2985 16.34      
2 A' 3116 2933 34.58      
3 A' 3081 2900 2.97      
4 A' 1506 1418 6.78      
5 A' 1471 1384 72.04      
6 A' 1413 1330 0.44      
7 A' 1196 1126 94.45      
8 A' 1174 1105 31.65      
9 A' 892 840 6.76      
10 A' 582 548 5.76      
11 A' 477 449 13.28      
12 A" 3168 2982 10.19      
13 A" 1508 1419 0.03      
14 A" 1425 1341 25.72      
15 A" 1198 1128 154.14      
16 A" 986 928 44.79      
17 A" 387 364 0.06      
18 A" 240 225 0.07      

Unscaled Zero Point Vibrational Energy (zpe) 13496.0 cm-1
Scaled (by 0.9412) Zero Point Vibrational Energy (zpe) 12702.5 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 CCSD/cc-pVTZ
ABC
0.31908 0.30130 0.17384

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.323 0.162 0.000
C2 -0.901 1.032 0.000
H3 1.259 0.718 0.000
F4 0.323 -0.645 1.092
F5 0.323 -0.645 -1.092
H6 -1.788 0.401 0.000
H7 -0.906 1.662 0.887
H8 -0.906 1.662 -0.887

Atom - Atom Distances (Å)
  C1 C2 H3 F4 F5 H6 H7 H8
C11.50201.08931.35781.35782.12452.13262.1326
C21.50202.18322.34592.34591.08821.08801.0880
H31.08932.18321.98191.98193.06382.52312.5231
F41.35782.34591.98192.18472.59682.62153.2786
F51.35782.34591.98192.18472.59683.27862.6215
H62.12451.08823.06382.59682.59681.77591.7759
H72.13261.08802.52312.62153.27861.77591.7745
H82.13261.08802.52313.27862.62151.77591.7745

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 109.164 C1 C2 H7 109.814
C1 C2 H8 109.814 C2 C1 H3 113.863
C2 C1 F4 110.128 C2 C1 F5 110.128
H3 C1 F4 107.669 H3 C1 F5 107.669
F4 C1 F5 107.125 H6 C2 H7 109.384
H6 C2 H8 109.384 H7 C2 H8 109.266
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability