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: G4

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at G4
 hartrees
Energy at 0K-538.565712
Energy at 298.15K-538.560467
HF Energy-538.765045
Nuclear repulsion energy93.284707
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 B3LYP/6-31G(2df,p)
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' 3161 3050 3.09      
2 A' 3106 2997 10.78      
3 A' 1497 1444 0.28      
4 A' 1462 1411 2.54      
5 A' 1231 1188 14.25      
6 A' 1099 1061 8.98      
7 A' 671 647 67.47      
8 A' 519 501 39.94      
9 A' 298 288 13.24      
10 A" 3270 3155 4.64      
11 A" 3171 3060 2.31      
12 A" 1250 1206 0.22      
13 A" 1050 1013 0.68      
14 A" 780 753 1.33      
15 A" 237 229 0.85      

Unscaled Zero Point Vibrational Energy (zpe) 11400.6 cm-1
Scaled (by 0.965) Zero Point Vibrational Energy (zpe) 11001.6 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 B3LYP/6-31G(2df,p)
ABC
1.08839 0.18692 0.17034

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.459 0.849 0.000
C2 0.000 0.889 0.000
Cl3 0.700 -0.856 0.000
H4 -2.004 0.732 0.929
H5 -2.004 0.732 -0.929
H6 0.430 1.336 -0.895
H7 0.430 1.336 0.895

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.45922.75091.08341.08342.14562.1456
C21.45921.88032.21422.21421.08871.0887
Cl32.75091.88033.27043.27042.38362.3836
H41.08342.21423.27041.85803.10042.5076
H51.08342.21423.27041.85802.50763.1004
H62.14561.08872.38363.10042.50761.7894
H72.14561.08872.38362.50763.10041.7894

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 110.920 C1 C2 H6 112.781
C1 C2 H7 112.781 C2 C1 H4 120.123
C2 C1 H5 120.123 Cl3 C2 H6 104.946
Cl3 C2 H7 104.946 H4 C1 H5 118.368
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.230      
2 C -0.168      
3 Cl -0.204      
4 H 0.142      
5 H 0.142      
6 H 0.159      
7 H 0.159      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.084 1.984 0.000 2.261
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


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


<r2> (average value of r2) Å2
<r2> 74.758
(<r2>)1/2 8.646