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 CHClCHCl (Ethene, 1,2-dichloro-, (Z)-)

using model chemistry: MP2=FULL/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at MP2=FULL/cc-pVDZ
 hartrees
Energy at 0K-996.433356
Energy at 298.15K-996.435470
HF Energy-995.877831
Nuclear repulsion energy183.994882
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 MP2=FULL/cc-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 3279 3116 1.70      
2 A1 1657 1575 31.89      
3 A1 1213 1153 0.00      
4 A1 746 709 19.73      
5 A1 167 159 0.24      
6 A2 890 846 0.00      
7 A2 416 395 0.00      
8 B1 719 683 53.98      
9 B2 3257 3095 13.36      
10 B2 1322 1256 25.26      
11 B2 886 842 69.42      
12 B2 581 552 3.83      

Unscaled Zero Point Vibrational Energy (zpe) 7566.2 cm-1
Scaled (by 0.9504) Zero Point Vibrational Energy (zpe) 7190.9 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 MP2=FULL/cc-pVDZ
ABC
0.38599 0.08203 0.06765

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.673 0.963
C2 0.000 -0.673 0.963
H3 0.000 1.218 1.910
H4 0.000 -1.218 1.910
Cl5 0.000 1.655 -0.452
Cl6 0.000 -1.655 -0.452

Atom - Atom Distances (Å)
  C1 C2 H3 H4 Cl5 Cl6
C11.34621.09232.11491.72262.7247
C21.34622.11491.09232.72471.7226
H31.09232.11492.43622.40183.7194
H42.11491.09232.43623.71942.4018
Cl51.72262.72472.40183.71943.3107
Cl62.72471.72263.71942.40183.3107

picture of Ethene, 1,2-dichloro-, (Z)- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H4 119.928 C1 C2 Cl6 124.766
C2 C1 H3 119.928 C2 C1 Cl5 124.766
H3 C1 Cl5 115.305 H4 C2 Cl6 115.305
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability