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All results from a given calculation for CHClCCl2 (Trichloroethylene)

using model chemistry: MP2/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/3-21G
 hartrees
Energy at 0K-1448.042946
Energy at 298.15K-1448.043846
HF Energy-1447.715111
Nuclear repulsion energy304.805651
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 MP2/3-21G
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' 3304 3154 12.22      
2 A' 1671 1595 7.37      
3 A' 1308 1248 9.57      
4 A' 859 820 78.93      
5 A' 745 711 70.28      
6 A' 565 539 13.06      
7 A' 350 334 0.01      
8 A' 248 237 0.68      
9 A' 165 158 1.23      
10 A" 874 834 41.75      
11 A" 460 439 5.51      
12 A" 198 189 1.24      

Unscaled Zero Point Vibrational Energy (zpe) 5373.0 cm-1
Scaled (by 0.9545) Zero Point Vibrational Energy (zpe) 5128.6 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 MP2/3-21G
ABC
0.11985 0.04678 0.03365

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.096 -0.302 0.000
C2 0.000 0.443 0.000
H3 -2.092 0.115 0.000
Cl4 -1.055 -2.125 0.000
Cl5 -0.129 2.266 0.000
Cl6 1.694 -0.198 0.000

Atom - Atom Distances (Å)
  C1 C2 H3 Cl4 Cl5 Cl6
C11.32571.07921.82332.74482.7921
C21.32572.11722.77651.82791.8111
H31.07922.11722.46832.91213.7984
Cl41.82332.77652.46834.48813.3572
Cl52.74481.82792.91214.48813.0653
Cl62.79211.81113.79843.35723.0653

picture of Trichloroethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl5 120.166 C1 C2 Cl6 125.059
C2 C1 H3 123.039 C2 C1 Cl4 122.918
H3 C1 Cl4 114.043 Cl5 C2 Cl6 114.775
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at MP2/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.320     -0.091
2 C -0.384     0.003
3 H 0.287     0.204
4 Cl 0.106     -0.065
5 Cl 0.141     -0.042
6 Cl 0.172     -0.009


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.212 0.425 0.000 1.284
CHELPG        
AIM        
ESP -1.295 0.462 0.000 1.375


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -48.003 -1.287 0.000
y -1.287 -52.604 0.000
z 0.000 0.000 -51.931
Traceless
 xyz
x 4.264 -1.287 0.000
y -1.287 -2.637 0.000
z 0.000 0.000 -1.627
Polar
3z2-r2-3.255
x2-y24.601
xy-1.287
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 7.056 0.392 0.000
y 0.392 10.284 0.000
z 0.000 0.000 1.998


<r2> (average value of r2) Å2
<r2> 277.951
(<r2>)1/2 16.672