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: HSEh1PBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at HSEh1PBE/3-21G*
 hartrees
Energy at 0K-535.997724
Energy at 298.15K-536.001326
HF Energy-535.997724
Nuclear repulsion energy93.310046
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 HSEh1PBE/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' 3191 3063 2.57      
2 A' 3141 3015 7.59      
3 A' 1540 1478 4.79      
4 A' 1502 1442 6.13      
5 A' 1278 1226 5.29      
6 A' 1095 1051 7.67      
7 A' 672 645 92.21      
8 A' 515 494 35.84      
9 A' 312 299 15.75      
10 A" 3305 3172 3.43      
11 A" 3208 3079 0.73      
12 A" 1298 1246 0.18      
13 A" 1085 1041 0.62      
14 A" 810 777 5.28      
15 A" 241 232 1.04      

Unscaled Zero Point Vibrational Energy (zpe) 11595.9 cm-1
Scaled (by 0.9599) Zero Point Vibrational Energy (zpe) 11130.9 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 HSEh1PBE/3-21G*
ABC
1.07031 0.18828 0.17109

See section I.F.4 to change rotational constant units
Geometric Data calculated at HSEh1PBE/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -1.461 0.832 0.000
C2 0.000 0.895 0.000
Cl3 0.701 -0.851 0.000
H4 -1.999 0.703 0.932
H5 -1.999 0.703 -0.932
H6 0.419 1.349 -0.898
H7 0.419 1.349 0.898

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.46252.74001.08351.08352.14722.1472
C21.46251.88212.21352.21351.08991.0899
Cl32.74001.88213.25193.25192.39332.3933
H41.08352.21353.25191.86413.10032.5029
H51.08352.21353.25191.86412.50293.1003
H62.14721.08992.39333.10032.50291.7954
H72.14721.08992.39332.50293.10031.7954

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 109.374 C1 C2 H6 113.743
C1 C2 H7 113.743 C2 C1 H4 120.046
C2 C1 H5 120.046 Cl3 C2 H6 104.070
Cl3 C2 H7 104.070 H4 C1 H5 118.686
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.352      
2 C -0.584      
3 Cl -0.090      
4 H 0.234      
5 H 0.234      
6 H 0.279      
7 H 0.279      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  -1.132 2.017 0.000 2.313
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.274 0.837 0.000
y 0.837 -26.317 0.000
z 0.000 0.000 -24.849
Traceless
 xyz
x 0.310 0.837 0.000
y 0.837 -1.256 0.000
z 0.000 0.000 0.946
Polar
3z2-r21.892
x2-y21.044
xy0.837
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.920 -1.214 0.000
y -1.214 4.573 0.000
z 0.000 0.000 3.450


<r2> (average value of r2) Å2
<r2> 74.681
(<r2>)1/2 8.642