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 CH2ClCH2Cl (Ethane, 1,2-dichloro-)

using model chemistry: MP4/cc-pVDZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2 1A

Conformer 1 (C2H)

Jump to S1C2
Vibrational Frequencies calculated at MP4/cc-pVDZ
Rotational Constants (cm-1) from geometry optimized at MP4/cc-pVDZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2)

Jump to S1C1
Energy calculated at MP4/cc-pVDZ
 hartrees
Energy at 0K-997.696277
Energy at 298.15K-997.701124
HF Energy-997.075835
Nuclear repulsion energy200.954147
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 MP4/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 A 3158 3054        
2 A 3095 2993        
3 A 1466 1418        
4 A 1342 1298        
5 A 1227 1187        
6 A 1064 1029        
7 A 966 934        
8 A 681 658        
9 A 264 256        
10 A 120 116        
11 B 3169 3064        
12 B 3087 2984        
13 B 1462 1413        
14 B 1315 1272        
15 B 1158 1119        
16 B 900 870        
17 B 706 682        
18 B 412 398        

Unscaled Zero Point Vibrational Energy (zpe) 12795.7 cm-1
Scaled (by 0.9669) Zero Point Vibrational Energy (zpe) 12372.2 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 MP4/cc-pVDZ
ABC
0.32753 0.07373 0.06400

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/cc-pVDZ

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.297 0.702 0.902
C2 -0.297 -0.702 0.902
Cl3 -0.297 1.694 -0.475
Cl4 0.297 -1.694 -0.475
H5 0.000 1.221 1.831
H6 1.397 0.665 0.840
H7 -0.000 -1.221 1.831
H8 -1.397 -0.665 0.840

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 H5 H6 H7 H8
C11.52381.79832.76351.10481.10292.15572.1775
C21.52382.76351.79832.15572.17751.10481.1029
Cl31.79832.76353.43992.37322.37863.72872.9164
Cl42.76351.79833.43993.72872.91642.37322.3786
H51.10482.15572.37323.72871.80092.44132.5479
H61.10292.17752.37862.91641.80092.54793.0949
H72.15571.10483.72872.37322.44132.54791.8009
H82.17751.10292.91642.37862.54793.09491.8009

picture of Ethane, 1,2-dichloro- state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl4 112.319 C1 C2 H7 109.153
C1 C2 H8 110.971 C2 C1 Cl3 112.319
C2 C1 H5 109.153 C2 C1 H6 110.971
Cl3 C1 H5 107.242 Cl3 C1 H6 107.727
Cl4 C2 H7 107.242 Cl4 C2 H8 107.727
H5 C1 H6 109.322 H7 C2 H8 109.322
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability