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 CH2ClCCl3 (1,1,1,2-tetrachloroethane)

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 CS 1A'
Energy calculated at QCISD/6-31G**
 hartrees
Energy at 0K-1915.664259
Energy at 298.15K 
HF Energy-1914.801839
Nuclear repulsion energy532.418085
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' 3179 2993 5.74      
2 A' 1521 1432 4.96      
3 A' 1385 1304 14.13      
4 A' 1120 1054 10.49      
5 A' 878 827 48.29      
6 A' 797 750 101.01      
7 A' 572 538 17.90      
8 A' 398 375 1.83      
9 A' 321 303 1.07      
10 A' 252 237 0.10      
11 A' 158 149 0.62      
12 A" 3252 3061 0.22      
13 A" 1285 1209 9.17      
14 A" 1026 966 54.60      
15 A" 774 728 79.21      
16 A" 347 326 0.46      
17 A" 256 241 0.99      
18 A" 118 111 1.22      

Unscaled Zero Point Vibrational Energy (zpe) 8819.1 cm-1
Scaled (by 0.9414) Zero Point Vibrational Energy (zpe) 8302.3 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
0.06165 0.03635 0.03442

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.275 0.281 0.000
C2 -1.254 0.368 0.000
Cl3 -2.063 -1.210 0.000
Cl4 0.864 1.969 0.000
Cl5 0.864 -0.547 1.455
Cl6 0.864 -0.547 -1.455
H7 -1.562 0.911 0.889
H8 -1.562 0.911 -0.889

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 Cl5 Cl6 H7 H8
C11.53182.77401.78741.77501.77502.13652.1365
C21.53181.77402.65492.72802.72801.08631.0863
Cl32.77401.77404.32193.33583.33582.35382.3538
Cl41.78742.65494.32192.90682.90682.79262.7926
Cl51.77502.72803.33582.90682.91022.88713.6756
Cl61.77502.72803.33582.90682.91023.67562.8871
H72.13651.08632.35382.79262.88713.67561.7782
H82.13651.08632.35382.79263.67562.88711.7782

picture of 1,1,1,2-tetrachloroethane state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl3 113.895 C1 C2 H7 108.176
C1 C2 H8 108.176 C2 C1 Cl4 105.974
C2 C1 Cl5 110.955 C2 C1 Cl6 110.955
Cl3 C2 H7 108.349 Cl3 C2 H8 108.349
Cl4 C1 Cl5 109.366 Cl4 C1 Cl6 109.366
Cl5 C1 Cl6 110.125 H7 C2 H8 109.863
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability