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: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-1451.917889
Energy at 298.15K-1451.921777
Nuclear repulsion energy338.921886
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 mPW1PW91/3-21G*
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 3216 3054 0.27      
2 A 3192 3031 0.72      
3 A 3141 2983 2.58      
4 A 1523 1446 14.42      
5 A 1375 1306 5.29      
6 A 1341 1273 9.39      
7 A 1270 1206 15.03      
8 A 1234 1172 2.65      
9 A 1055 1001 2.56      
10 A 963 914 29.66      
11 A 775 736 12.53      
12 A 727 690 127.33      
13 A 665 632 36.56      
14 A 397 377 7.34      
15 A 337 320 1.00      
16 A 260 247 1.36      
17 A 185 175 4.44      
18 A 110 105 3.77      

Unscaled Zero Point Vibrational Energy (zpe) 10881.9 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 10333.5 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 mPW1PW91/3-21G*
ABC
0.11704 0.04850 0.03549

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.650 -0.857 0.392
C2 -0.414 -0.082 -0.373
Cl3 2.294 -0.316 -0.089
H4 0.534 -0.702 1.464
H5 0.568 -1.917 0.150
Cl6 -2.009 -0.836 -0.010
Cl7 -0.418 1.646 0.083
H8 -0.259 -0.142 -1.448

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 Cl6 Cl7 H8
C11.52301.79631.08971.09042.69022.73902.1738
C21.52302.73312.15832.14581.80121.78701.0878
Cl31.79632.73312.37932.36694.33553.35132.8976
H41.08972.15832.37931.79052.94292.88563.0699
H51.09042.14582.36691.79052.79913.69732.5275
Cl62.69021.80124.33552.94292.79912.94992.3689
Cl72.73901.78703.35132.88563.69732.94992.3589
H82.17381.08782.89763.06992.52752.36892.3589

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 107.753 C1 C2 Cl7 111.434
C1 C2 H8 111.649 C2 C1 Cl3 110.583
C2 C1 H4 110.301 C2 C1 H5 109.265
Cl3 C1 H4 108.582 Cl3 C1 H5 107.638
H4 C1 H5 110.433 Cl6 C2 Cl7 110.590
Cl6 C2 H8 107.579 Cl7 C2 H8 107.783
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.535      
2 C -0.484      
3 Cl -0.007      
4 H 0.307      
5 H 0.303      
6 Cl 0.031      
7 Cl 0.050      
8 H 0.336      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.061 -1.454 -0.172 1.466
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -55.999 -0.153 0.436
y -0.153 -50.133 -0.405
z 0.436 -0.405 -48.524
Traceless
 xyz
x -6.671 -0.153 0.436
y -0.153 2.128 -0.405
z 0.436 -0.405 4.542
Polar
3z2-r29.084
x2-y2-5.866
xy-0.153
xz0.436
yz-0.405


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.194 1.018 -0.453
y 1.018 7.370 0.068
z -0.453 0.068 4.783


<r2> (average value of r2) Å2
<r2> 272.100
(<r2>)1/2 16.495