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 C2H3Cl (Ethene, chloro-)

using model chemistry: HF/CEP-121G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/CEP-121G
 hartrees
Energy at 0K-27.327262
Energy at 298.15K-27.330123
Nuclear repulsion energy33.350801
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 HF/CEP-121G
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' 3413 3115 12.84      
2 A' 3396 3099 3.06      
3 A' 3296 3007 0.38      
4 A' 1769 1614 56.44      
5 A' 1520 1387 12.41      
6 A' 1398 1275 27.60      
7 A' 1130 1031 22.85      
8 A' 711 649 55.34      
9 A' 414 378 0.66      
10 A" 1097 1001 62.98      
11 A" 1067 973 56.23      
12 A" 683 623 19.25      

Unscaled Zero Point Vibrational Energy (zpe) 9946.4 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 9076.1 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 HF/CEP-121G
ABC
1.87341 0.19101 0.17334

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.550 0.000
C2 1.309 0.325 0.000
Cl3 -1.211 -0.787 0.000
H4 -0.471 1.512 0.000
H5 1.727 -0.664 0.000
H6 1.987 1.160 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6
C11.32781.80371.07102.11112.0786
C21.32782.75412.13891.07411.0760
Cl31.80372.75412.41482.94073.7441
H41.07102.13892.41483.09292.4828
H52.11111.07412.94073.09291.8429
H62.07861.07603.74412.48281.8429

picture of Ethene, chloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 122.675 C1 C2 H6 119.332
C2 C1 Cl3 122.431 C2 C1 H4 125.831
Cl3 C1 H4 111.738 H5 C2 H6 117.993
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.250      
2 C -0.229      
3 Cl -0.072      
4 H 0.211      
5 H 0.179      
6 H 0.162      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.828 1.634 0.000 2.452
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -24.176 -1.248 0.000
y -1.248 -23.357 0.000
z 0.000 0.000 -27.079
Traceless
 xyz
x 1.042 -1.248 0.000
y -1.248 2.270 0.000
z 0.000 0.000 -3.312
Polar
3z2-r2-6.625
x2-y2-0.818
xy-1.248
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.014 1.058 0.000
y 1.058 4.417 0.000
z 0.000 0.000 2.123


<r2> (average value of r2) Å2
<r2> 49.841
(<r2>)1/2 7.060