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: B3PW91/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 1A
Energy calculated at B3PW91/3-21G
 hartrees
Energy at 0K-1451.388047
Energy at 298.15K-1451.391770
Nuclear repulsion energy331.235506
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 B3PW91/3-21G
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 3237 3111 1.77      
2 A 3220 3095 0.81      
3 A 3150 3028 0.88      
4 A 1506 1448 16.05      
5 A 1347 1295 6.73      
6 A 1298 1248 12.42      
7 A 1209 1162 19.18      
8 A 1195 1148 1.99      
9 A 1083 1041 5.72      
10 A 929 893 27.56      
11 A 721 693 20.94      
12 A 685 659 135.78      
13 A 629 605 38.27      
14 A 377 363 9.55      
15 A 313 301 0.86      
16 A 240 230 2.26      
17 A 174 168 6.50      
18 A 104 100 4.88      

Unscaled Zero Point Vibrational Energy (zpe) 10708.6 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 10293.1 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 B3PW91/3-21G
ABC
0.11156 0.04643 0.03395

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.613 -0.875 0.418
C2 -0.392 -0.099 -0.385
Cl3 2.341 -0.347 -0.092
H4 0.522 -0.678 1.485
H5 0.549 -1.939 0.193
Cl6 -2.072 -0.838 -0.015
Cl7 -0.395 1.691 0.082
H8 -0.250 -0.157 -1.460

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 Cl6 Cl7 H8
C11.50211.87771.08861.09002.72012.77742.1877
C21.50212.76022.16012.14601.87191.85061.0862
Cl31.87772.76022.43062.41444.44133.41632.9358
H41.08862.16012.43061.80553.00052.90263.0885
H51.09002.14602.41441.80552.85083.75312.5586
Cl62.72011.87194.44133.00052.85083.03652.4235
Cl72.77741.85063.41632.90263.75313.03652.4115
H82.18771.08622.93583.08852.55862.42352.4115

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 106.942 C1 C2 Cl7 111.451
C1 C2 H8 114.439 C2 C1 Cl3 109.005
C2 C1 H4 111.996 C2 C1 H5 110.763
Cl3 C1 H4 107.026 Cl3 C1 H5 105.811
H4 C1 H5 111.938 Cl6 C2 Cl7 109.310
Cl6 C2 H8 107.009 Cl7 C2 H8 107.525
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.568      
2 C -0.606      
3 Cl 0.017      
4 H 0.320      
5 H 0.316      
6 Cl 0.068      
7 Cl 0.099      
8 H 0.354      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -0.078 -1.723 -0.165 1.733
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -58.430 -0.454 0.686
y -0.454 -51.031 -0.538
z 0.686 -0.538 -48.585
Traceless
 xyz
x -8.622 -0.454 0.686
y -0.454 2.477 -0.538
z 0.686 -0.538 6.145
Polar
3z2-r212.290
x2-y2-7.399
xy-0.454
xz0.686
yz-0.538


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 9.627 1.316 -0.632
y 1.316 7.185 0.101
z -0.632 0.101 4.037


<r2> (average value of r2) Å2
<r2> 283.631
(<r2>)1/2 16.841