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: PBEPBEultrafine/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at PBEPBEultrafine/6-31+G**
 hartrees
Energy at 0K-538.446369
Energy at 298.15K-538.449879
HF Energy-538.446369
Nuclear repulsion energy92.820790
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 PBEPBEultrafine/6-31+G**
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' 3103 3068 3.56      
2 A' 3044 3010 9.65      
3 A' 1458 1442 0.62      
4 A' 1419 1403 6.14      
5 A' 1200 1187 12.40      
6 A' 1096 1083 10.24      
7 A' 682 675 85.20      
8 A' 491 486 40.55      
9 A' 288 284 17.05      
10 A" 3212 3176 4.11      
11 A" 3114 3078 1.59      
12 A" 1213 1199 0.03      
13 A" 1026 1014 0.88      
14 A" 766 757 2.44      
15 A" 234 231 1.13      

Unscaled Zero Point Vibrational Energy (zpe) 11172.9 cm-1
Scaled (by 0.9886) Zero Point Vibrational Energy (zpe) 11045.5 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 PBEPBEultrafine/6-31+G**
ABC
1.07510 0.18536 0.16891

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBEultrafine/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.461 0.852 0.000
C2 0.000 0.895 0.000
Cl3 0.702 -0.862 0.000
H4 -2.012 0.740 0.937
H5 -2.012 0.740 -0.937
H6 0.430 1.348 -0.903
H7 0.430 1.348 0.903

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.46142.75931.09271.09272.15362.1536
C21.46141.89192.22482.22481.09811.0981
Cl32.75931.89193.28753.28752.40242.4024
H41.09272.22483.28751.87383.11772.5171
H51.09272.22483.28751.87382.51713.1177
H62.15361.09812.40243.11772.51711.8062
H72.15361.09812.40242.51713.11771.8062

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 110.079 C1 C2 H6 113.829
C1 C2 H7 113.829 C2 C1 H4 120.476
C2 C1 H5 120.476 Cl3 C2 H6 103.734
Cl3 C2 H7 103.734 H4 C1 H5 118.049
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBEultrafine/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.205      
2 C -0.551      
3 Cl -0.041      
4 H 0.175      
5 H 0.175      
6 H 0.224      
7 H 0.224      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.064 1.981 0.000 2.249
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.911 0.862 0.000
y 0.862 -27.005 0.000
z 0.000 0.000 -25.327
Traceless
 xyz
x 0.255 0.862 0.000
y 0.862 -1.386 0.000
z 0.000 0.000 1.131
Polar
3z2-r22.261
x2-y21.094
xy0.862
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 6.727 -1.522 0.000
y -1.522 6.312 0.000
z 0.000 0.000 4.552


<r2> (average value of r2) Å2
<r2> 75.836
(<r2>)1/2 8.708