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: HF/SDD

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at HF/SDD
 hartrees
Energy at 0K-1914.646276
Energy at 298.15K 
HF Energy-1914.646276
Nuclear repulsion energy519.385716
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 HF/SDD
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' 3338 3005 4.56 118.69 0.05 0.10
2 A' 1618 1457 6.76 7.99 0.74 0.85
3 A' 1460 1314 13.23 10.02 0.45 0.62
4 A' 1182 1064 9.76 15.36 0.15 0.26
5 A' 846 762 63.35 51.68 0.53 0.70
6 A' 746 672 116.45 5.18 0.11 0.20
7 A' 553 498 29.40 22.38 0.11 0.20
8 A' 383 345 2.32 22.51 0.19 0.32
9 A' 315 284 1.88 10.26 0.72 0.84
10 A' 247 223 0.23 6.88 0.62 0.77
11 A' 158 142 1.21 1.15 0.70 0.82
12 A" 3426 3084 0.01 57.09 0.75 0.86
13 A" 1360 1224 18.91 8.20 0.75 0.86
14 A" 1075 968 52.24 2.36 0.75 0.86
15 A" 757 682 92.75 21.22 0.75 0.86
16 A" 351 316 0.79 5.55 0.75 0.86
17 A" 255 229 2.13 3.72 0.75 0.86
18 A" 113 102 2.70 2.50 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 9090.0 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 8184.7 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 HF/SDD
ABC
0.05883 0.03463 0.03264

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.253 0.289 0.000
C2 -1.268 0.383 0.000
Cl3 -2.101 -1.265 0.000
Cl4 0.883 2.028 0.000
Cl5 0.883 -0.553 1.496
Cl6 0.883 -0.553 -1.496
H7 -1.602 0.893 0.885
H8 -1.602 0.893 -0.885

Atom - Atom Distances (Å)
  C1 C2 Cl3 Cl4 Cl5 Cl6 H7 H8
C11.52362.82051.84981.82891.82892.14142.1414
C21.52361.84682.70782.78232.78231.07411.0741
Cl32.82051.84684.44403.41313.41312.38522.3852
Cl41.84982.70784.44402.98372.98372.87112.8711
Cl51.82892.78233.41312.98372.99212.93923.7326
Cl61.82892.78233.41312.98372.99213.73262.9392
H72.14141.07412.38522.87112.93923.73261.7690
H82.14141.07412.38522.87113.73262.93921.7690

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 113.275 C1 C2 H7 109.839
C1 C2 H8 109.839 C2 C1 Cl4 106.373
C2 C1 Cl5 111.862 C2 C1 Cl6 111.862
Cl3 C2 H7 106.472 Cl3 C2 H8 106.472
Cl4 C1 Cl5 108.400 Cl4 C1 Cl6 108.400
Cl5 C1 Cl6 109.772 H7 C2 H8 110.870
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.354      
2 C -0.324      
3 Cl -0.059      
4 Cl 0.047      
5 Cl 0.070      
6 Cl 0.070      
7 H 0.276      
8 H 0.276      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.122 1.854 0.000 2.168
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -65.761 -4.481 0.000
y -4.481 -65.626 0.000
z 0.000 0.000 -63.933
Traceless
 xyz
x -0.982 -4.481 0.000
y -4.481 -0.779 0.000
z 0.000 0.000 1.760
Polar
3z2-r23.521
x2-y2-0.135
xy-4.481
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.368 1.453 0.000
y 1.453 9.672 0.000
z 0.000 0.000 7.686


<r2> (average value of r2) Å2
<r2> 358.812
(<r2>)1/2 18.942