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return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
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All results from a given calculation for (1-chloroethyl radical)

using model chemistry: HSEh1PBE/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at HSEh1PBE/STO-3G
 hartrees
Energy at 0K-532.600057
Energy at 298.15K-532.603532
HF Energy-532.600057
Nuclear repulsion energy92.651340
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/STO-3G
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 3526 3114 1.07      
2 A 3484 3077 0.25      
3 A 3477 3071 1.11      
4 A 3331 2941 0.21      
5 A 1672 1476 3.55      
6 A 1657 1463 6.50      
7 A 1568 1384 4.26      
8 A 1400 1236 55.78      
9 A 1204 1064 6.66      
10 A 1121 990 18.60      
11 A 1103 974 5.83      
12 A 805 711 20.42      
13 A 537 474 15.60      
14 A 329 291 1.90      
15 A 154 136 0.22      

Unscaled Zero Point Vibrational Energy (zpe) 12684.0 cm-1
Scaled (by 0.8831) Zero Point Vibrational Energy (zpe) 11201.2 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/STO-3G
ABC
1.33881 0.17592 0.16084

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.475 0.624 -0.111
C2 1.679 -0.281 0.015
Cl3 -1.141 -0.129 0.009
H4 0.496 1.651 0.283
H5 1.587 -1.151 -0.650
H6 2.584 0.282 -0.259
H7 1.807 -0.652 1.047

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.51171.78711.10022.16292.14132.1777
C21.51172.82462.28151.09911.09981.1037
Cl31.78712.82462.43402.98683.75693.1690
H41.10022.28152.43403.14862.55502.7579
H52.16291.09912.98683.14861.78851.7821
H62.14131.09983.75692.55501.78851.7836
H72.17771.10373.16902.75791.78211.7836

picture of 1-chloroethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 H5 110.891 C1 C2 H6 109.141
C1 C2 H7 111.796 C2 C1 Cl3 117.555
C2 C1 H4 120.927 H5 C2 H6 108.849
H5 C2 H7 108.001 H6 C2 H7 108.078
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HSEh1PBE/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.019      
2 C -0.242      
3 Cl -0.136      
4 H 0.100      
5 H 0.101      
6 H 0.098      
7 H 0.098      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.010 0.523 0.261 2.093
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -23.945 -0.019 0.128
y -0.019 -23.028 0.372
z 0.128 0.372 -24.129
Traceless
 xyz
x -0.366 -0.019 0.128
y -0.019 1.008 0.372
z 0.128 0.372 -0.642
Polar
3z2-r2-1.284
x2-y2-0.917
xy-0.019
xz0.128
yz0.372


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.299 0.441 -0.030
y 0.441 1.875 0.055
z -0.030 0.055 1.178


<r2> (average value of r2) Å2
<r2> 77.312
(<r2>)1/2 8.793