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: CCD/cc-pVTZ

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

Conformer 2 (C2)

Jump to S1C1
Energy calculated at CCD/cc-pVTZ
 hartrees
Energy at 0K-997.903296
Energy at 298.15K-997.908186
HF Energy-997.132395
Nuclear repulsion energy202.638066
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 CCD/cc-pVTZ
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 3175 2964 1.10      
2 A 3121 2914 22.53      
3 A 1499 1399 0.29      
4 A 1370 1280 16.53      
5 A 1253 1170 0.58      
6 A 1077 1006 1.23      
7 A 980 915 9.39      
8 A 696 650 15.24      
9 A 265 247 0.75      
10 A 118 110 0.86      
11 B 3187 2976 4.65      
12 B 3113 2906 3.40      
13 B 1496 1397 10.11      
14 B 1347 1258 35.00      
15 B 1187 1108 0.68      
16 B 920 859 14.65      
17 B 723 675 19.85      
18 B 417 389 6.71      

Unscaled Zero Point Vibrational Energy (zpe) 12971.1 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 12111.2 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 CCD/cc-pVTZ
ABC
0.33517 0.07460 0.06490

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

Point Group is C2

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.297 0.695 0.892
C2 -0.297 -0.695 0.892
Cl3 -0.297 1.685 -0.469
Cl4 0.297 -1.685 -0.469
H5 0.011 1.208 1.807
H6 1.379 0.658 0.821
H7 -0.011 -1.208 1.807
H8 -1.379 -0.658 0.821

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 H5 H6 H7 H8
C11.51151.78442.74121.08731.08542.13402.1553
C21.51152.74121.78442.13402.15531.08731.0854
Cl31.78442.74123.42102.34552.35133.69182.8848
Cl42.74121.78443.42103.69182.88482.34552.3513
H51.08732.13402.34553.69181.77402.41652.5274
H61.08542.15532.35132.88481.77402.52743.0565
H72.13401.08733.69182.34552.41652.52741.7740
H82.15531.08542.88482.35132.52743.05651.7740

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 112.279 C1 C2 H7 109.312
C1 C2 H8 111.124 C2 C1 Cl3 112.279
C2 C1 H5 109.312 C2 C1 H6 111.124
Cl3 C1 H5 107.008 Cl3 C1 H6 107.525
Cl4 C2 H7 107.008 Cl4 C2 H8 107.525
H5 C1 H6 109.474 H7 C2 H8 109.474
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability