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: QCISD/6-31+G**

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/6-31+G**
 hartrees
Energy at 0K-537.381473
Energy at 298.15K-537.384234
HF Energy-536.941699
Nuclear repulsion energy 
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/6-31+G**
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' 3332 3150 4.52      
2 A' 3288 3109 5.59      
3 A' 3231 3055 0.37      
4 A' 1698 1605 45.52      
5 A' 1449 1370 11.97      
6 A' 1347 1273 9.72      
7 A' 1075 1016 15.18      
8 A' 745 704 34.93      
9 A' 405 383 0.23      
10 A" 982 928 46.72      
11 A" 906 856 30.47      
12 A" 627 592 12.97      

Unscaled Zero Point Vibrational Energy (zpe) 9541.7 cm-1
Scaled (by 0.9454) Zero Point Vibrational Energy (zpe) 9020.7 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 QCISD/6-31+G**
ABC
1.91264 0.19832 0.17969

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.760 0.000
C2 1.306 1.036 0.000
Cl3 -0.633 -0.860 0.000
H4 -0.770 1.518 0.000
H5 2.059 0.260 0.000
H6 1.631 2.067 0.000

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6
C11.33511.73851.08032.11912.0903
C21.33512.71142.13101.08101.0812
Cl31.73852.71142.38142.91593.7000
H41.08032.13102.38143.09582.4625
H52.11911.08102.91593.09581.8567
H62.09031.08123.70002.46251.8567

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 122.238 C1 C2 H6 119.413
C2 C1 Cl3 123.279 C2 C1 H4 123.492
Cl3 C1 H4 113.229 H5 C2 H6 118.350
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability