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: MP3/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at MP3/6-31G*
 hartrees
Energy at 0K-1456.618570
Energy at 298.15K-1456.622582
HF Energy-1455.919088
Nuclear repulsion energy340.442171
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 MP3/6-31G*
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 3246 3046 0.66      
2 A 3228 3030 0.94      
3 A 3176 2981 4.82      
4 A 1534 1440 6.95      
5 A 1413 1326 6.67      
6 A 1367 1283 18.64      
7 A 1310 1230 22.03      
8 A 1238 1162 4.32      
9 A 1119 1050 2.18      
10 A 996 935 26.92      
11 A 849 797 18.89      
12 A 795 746 97.68      
13 A 713 669 22.49      
14 A 403 378 6.70      
15 A 350 328 1.05      
16 A 268 252 1.49      
17 A 187 176 4.14      
18 A 116 109 3.73      

Unscaled Zero Point Vibrational Energy (zpe) 11153.9 cm-1
Scaled (by 0.9386) Zero Point Vibrational Energy (zpe) 10469.1 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 MP3/6-31G*
ABC
0.11744 0.04892 0.03574

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3/6-31G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.665 -0.837 0.392
C2 -0.416 -0.078 -0.362
Cl3 2.293 -0.301 -0.091
H4 0.551 -0.688 1.466
H5 0.581 -1.898 0.158
Cl6 -1.982 -0.856 -0.012
Cl7 -0.450 1.640 0.081
H8 -0.259 -0.134 -1.436

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 Cl6 Cl7 H8
C11.52091.78051.08961.08972.67782.73362.1656
C21.52092.73162.15552.13891.78301.77431.0873
Cl31.78052.73162.36762.35414.31143.36412.8892
H41.08962.15552.36761.78192.93762.88703.0630
H51.08972.13892.35411.78192.77163.68522.5211
Cl62.67781.78304.31142.93762.77162.93032.3490
Cl72.73361.77433.36412.88703.68522.93032.3418
H82.16561.08732.88923.06302.52112.34902.3418

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 108.027 C1 C2 Cl7 111.879
C1 C2 H8 111.176 C2 C1 Cl3 111.425
C2 C1 H4 110.227 C2 C1 H5 108.912
Cl3 C1 H4 108.761 Cl3 C1 H5 107.768
H4 C1 H5 109.703 Cl6 C2 Cl7 110.921
Cl6 C2 H8 107.361 Cl7 C2 H8 107.401
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability