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 CH2CH2Cl (2-chloroethyl radical)

using model chemistry: HF/CEP-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HF/CEP-31G*
 hartrees
Energy at 0K-27.945374
Energy at 298.15K-27.949091
HF Energy-27.945374
Nuclear repulsion energy37.540241
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/CEP-31G*
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' 3331 2991 12.17      
2 A' 3321 2982 45.24      
3 A' 1630 1464 0.69      
4 A' 1574 1413 0.52      
5 A' 1394 1251 49.81      
6 A' 1139 1023 7.86      
7 A' 719 645 146.30      
8 A' 627 563 3.37      
9 A' 326 292 14.00      
10 A" 3440 3089 35.15      
11 A" 3390 3045 11.19      
12 A" 1357 1219 0.00      
13 A" 1150 1033 1.06      
14 A" 821 737 0.66      
15 A" 230 206 3.61      

Unscaled Zero Point Vibrational Energy (zpe) 12223.9 cm-1
Scaled (by 0.898) Zero Point Vibrational Energy (zpe) 10977.1 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 HF/CEP-31G*
ABC
1.07649 0.18970 0.17224

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.499 0.805 0.000
C2 0.000 0.867 0.000
Cl3 0.721 -0.821 0.000
H4 -2.023 0.617 0.928
H5 -2.023 0.617 -0.928
H6 0.392 1.347 -0.888
H7 0.392 1.347 0.888

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.50002.75121.08201.08202.15862.1586
C21.50001.83542.23962.23961.08331.0833
Cl32.75121.83543.23373.23372.36582.3658
H41.08202.23963.23371.85513.10892.5238
H51.08202.23963.23371.85512.52383.1089
H62.15861.08332.36583.10892.52381.7768
H72.15861.08332.36582.52383.10891.7768

picture of 2-chloroethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 Cl3 110.746 C1 C2 H6 112.352
C1 C2 H7 112.352 C2 C1 H4 119.436
C2 C1 H5 119.436 Cl3 C2 H6 105.378
Cl3 C2 H7 105.378 H4 C1 H5 118.023
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.337      
2 C -0.098      
3 Cl -0.224      
4 H 0.175      
5 H 0.175      
6 H 0.155      
7 H 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.111 1.950 0.000 2.244
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.480 1.300 0.000
y 1.300 -25.823 0.000
z 0.000 0.000 -24.194
Traceless
 xyz
x -0.471 1.300 0.000
y 1.300 -0.986 0.000
z 0.000 0.000 1.457
Polar
3z2-r22.915
x2-y20.343
xy1.300
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.540 -1.026 0.000
y -1.026 4.825 0.000
z 0.000 0.000 3.227


<r2> (average value of r2) Å2
<r2> 54.837
(<r2>)1/2 7.405