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: CCSD(T)/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CCSD(T)/cc-pVTZ
 hartrees
Energy at 0K-1916.191838
Energy at 298.15K 
HF Energy-1914.978862
Nuclear repulsion energy532.340797
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 CCSD(T)/cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3108 3029        
2 A' 1465 1428        
3 A' 1310 1277        
4 A' 1091 1064        
5 A' 835 814        
6 A' 769 750        
7 A' 556 542        
8 A' 383 373        
9 A' 308 301        
10 A' 241 235        
11 A' 153 149        
12 A" 3176 3096        
13 A" 1230 1199        
14 A" 979 955        
15 A" 741 722        
16 A" 333 324        
17 A" 243 237        
18 A" 111 109        

Unscaled Zero Point Vibrational Energy (zpe) 8516.2 cm-1
Scaled (by 0.9748) Zero Point Vibrational Energy (zpe) 8301.6 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 CCSD(T)/cc-pVTZ
ABC
0.06169 0.03640 0.03444

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.268 0.283 0.000
C2 -1.258 0.372 0.000
Cl3 -2.051 -1.220 0.000
Cl4 0.861 1.974 0.000
Cl5 0.861 -0.546 1.456
Cl6 0.861 -0.546 -1.456
H7 -1.570 0.908 0.893
H8 -1.570 0.908 -0.893

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 Cl5 Cl6 H7 H8
C11.52842.76391.79181.77731.77732.13662.1366
C21.52841.77882.65672.72982.72981.08721.0872
Cl32.76391.77884.32283.32483.32482.35762.3576
Cl41.79182.65674.32282.91042.91042.80092.8009
Cl51.77732.72983.32482.91042.91152.88803.6797
Cl61.77732.72983.32482.91042.91153.67972.8880
H72.13661.08722.35762.80092.88803.67971.7858
H82.13661.08722.35762.80093.67972.88801.7858

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 113.162 C1 C2 H7 108.364
C1 C2 H8 108.364 C2 C1 Cl4 106.020
C2 C1 Cl5 111.111 C2 C1 Cl6 111.111
Cl3 C2 H7 108.262 Cl3 C2 H8 108.262
Cl4 C1 Cl5 109.258 Cl4 C1 Cl6 109.258
Cl5 C1 Cl6 109.981 H7 C2 H8 110.430
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability