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 CH2ClCHCl2 (1,1,2-trichloroethane)

using model chemistry: QCISD/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at QCISD/6-31G
 hartrees
Energy at 0K-1456.173624
Energy at 298.15K-1456.177306
HF Energy-1455.816971
Nuclear repulsion energy326.437302
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/6-31G
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 3199 3082 0.20      
2 A 3186 3070 0.21      
3 A 3115 3002 2.09      
4 A 1519 1464 8.50      
5 A 1367 1317 5.68      
6 A 1321 1273 18.74      
7 A 1239 1194 23.99      
8 A 1194 1151 2.58      
9 A 1098 1058 2.29      
10 A 952 917 18.50      
11 A 723 696 17.55      
12 A 663 639 94.44      
13 A 612 590 28.85      
14 A 373 359 7.86      
15 A 307 296 0.82      
16 A 238 229 1.94      
17 A 173 167 5.58      
18 A 100 96 4.89      

Unscaled Zero Point Vibrational Energy (zpe) 10688.7 cm-1
Scaled (by 0.9636) Zero Point Vibrational Energy (zpe) 10299.6 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/6-31G
ABC
0.10724 0.04497 0.03278

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.652 -0.851 0.434
C2 -0.397 -0.097 -0.366
Cl3 2.393 -0.332 -0.100
H4 0.577 -0.647 1.506
H5 0.588 -1.925 0.231
Cl6 -2.075 -0.895 -0.021
Cl7 -0.461 1.721 0.079
H8 -0.250 -0.150 -1.446

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 Cl6 Cl7 H8
C11.51961.89351.09401.09492.76492.82452.1993
C21.51962.81262.18122.16081.88971.87271.0907
Cl31.89352.81262.44472.42934.50393.52022.9712
H41.09402.18122.44471.80573.07022.95293.1055
H51.09492.16082.42931.80572.86693.79672.5811
Cl62.76491.88974.50393.07022.86693.07522.4324
Cl72.82451.87273.52022.95293.79673.07522.4230
H82.19931.09072.97123.10552.58112.43242.4230

picture of 1,1,2-trichloroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl6 107.892 C1 C2 Cl7 112.318
C1 C2 H8 113.805 C2 C1 Cl3 110.514
C2 C1 H4 112.111 C2 C1 H5 110.417
Cl3 C1 H4 106.756 Cl3 C1 H5 105.632
H4 C1 H5 111.154 Cl6 C2 Cl7 109.637
Cl6 C2 H8 106.285 Cl7 C2 H8 106.701
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability