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: TPSSh/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at TPSSh/3-21G*
 hartrees
Energy at 0K-176.857091
Energy at 298.15K 
HF Energy-176.857091
Nuclear repulsion energy66.596207
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 TPSSh/3-21G*
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' 3279 3167 5.20 39.47 0.71 0.83
2 A' 3208 3098 12.82 127.93 0.23 0.37
3 A' 3185 3076 3.21 32.94 0.22 0.36
4 A' 1720 1661 74.44 10.84 0.10 0.17
5 A' 1481 1431 3.33 4.53 0.54 0.70
6 A' 1380 1333 1.24 17.27 0.62 0.76
7 A' 1185 1144 53.82 2.81 0.19 0.32
8 A' 956 923 24.70 5.43 0.37 0.54
9 A' 472 456 3.26 1.92 0.68 0.81
10 A" 1011 976 33.66 0.87 0.75 0.86
11 A" 925 894 79.87 1.76 0.75 0.86
12 A" 738 713 0.96 10.32 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9770.8 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 9435.7 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 TPSSh/3-21G*
ABC
2.19073 0.34035 0.29458

See section I.F.4 to change rotational constant units
Geometric Data calculated at TPSSh/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.433 0.000
C2 1.207 -0.115 0.000
F3 -1.165 -0.304 0.000
H4 -0.184 1.502 0.000
H5 1.344 -1.190 0.000
H6 2.085 0.520 0.000

Atom - Atom Distances (Å)
  C1 C2 F3 H4 H5 H6
C11.32601.37911.08422.10712.0867
C21.32602.38032.13281.08351.0832
F31.37912.38032.05552.66083.3531
H41.08422.13282.05553.09482.4719
H52.10711.08352.66083.09481.8636
H62.08671.08323.35312.47191.8636

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 121.649 C1 C2 H6 119.686
C2 C1 F3 123.253 C2 C1 H4 124.181
F3 C1 H4 112.566 H5 C2 H6 118.665
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at TPSSh/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.093      
2 C -0.486      
3 F -0.273      
4 H 0.218      
5 H 0.229      
6 H 0.219      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.092 0.829 0.000 1.371
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.243 -0.434 0.000
y -0.434 2.984 0.000
z 0.000 0.000 0.989


<r2> (average value of r2) Å2
<r2> 43.793
(<r2>)1/2 6.618