return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2CHF (Ethene, fluoro-)

using model chemistry: CCSD(T)/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(T)/cc-pVTZ
 hartrees
Energy at 0K-177.570863
Energy at 298.15K 
HF Energy-176.953284
Nuclear repulsion energy67.455341
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(T)/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3279 3196        
2 A' 3214 3133        
3 A' 3176 3096        
4 A' 1703 1660        
5 A' 1421 1385        
6 A' 1336 1302        
7 A' 1185 1155        
8 A' 941 917        
9 A' 476 464        
10 A" 957 933        
11 A" 872 850        
12 A" 726 708        

Unscaled Zero Point Vibrational Energy (zpe) 9641.9 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 9398.9 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(T)/cc-pVTZ
ABC
2.17860 0.35313 0.30387

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.435 0.000
C2 1.189 -0.159 0.000
F3 -1.147 -0.264 0.000
H4 -0.168 1.503 0.000
H5 1.280 -1.236 0.000
H6 2.079 0.453 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6
C11.32851.34301.08192.10432.0789
C21.32852.33812.14521.08091.0799
F31.34302.33812.02062.61433.3045
H41.08192.14522.02063.09812.4798
H52.10431.08092.61433.09811.8680
H62.07891.07993.30452.47981.8680

picture of Ethene, fluoro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 121.363 C1 C2 H6 118.988
C2 C1 F3 122.139 C2 C1 H4 125.432
F3 C1 H4 112.430 H5 C2 H6 119.649
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability