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 CHClCH3 (1-chloroethyl radical)

using model chemistry: ROHF/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C1 2A
Energy calculated at ROHF/6-31G
 hartrees
Energy at 0K-537.446418
Energy at 298.15K-537.450143
HF Energy-537.446418
Nuclear repulsion energy92.744686
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 ROHF/6-31G
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 3416 3058 9.25      
2 A 3282 2938 12.38      
3 A 3253 2912 17.94      
4 A 3185 2852 15.34      
5 A 1642 1470 6.12      
6 A 1629 1459 12.13      
7 A 1588 1422 9.86      
8 A 1400 1254 64.44      
9 A 1211 1084 2.67      
10 A 1149 1029 5.66      
11 A 1118 1001 19.35      
12 A 701 627 44.35      
13 A 572 512 41.67      
14 A 352 315 1.89      
15 A 181 162 0.41      

Unscaled Zero Point Vibrational Energy (zpe) 12339.4 cm-1
Scaled (by 0.8953) Zero Point Vibrational Energy (zpe) 11047.4 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 ROHF/6-31G
ABC
1.35213 0.17556 0.16050

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

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.502 0.628 -0.104
C2 1.672 -0.284 0.015
Cl3 -1.146 -0.126 0.008
H4 0.500 1.630 0.271
H5 1.603 -1.102 -0.691
H6 2.582 0.268 -0.188
H7 1.751 -0.710 1.011

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.48891.81581.06972.13282.11332.1438
C21.48892.82272.25961.08231.08371.0861
Cl31.81582.82272.42142.99883.75433.1212
H41.06972.25962.42143.09912.53082.7555
H52.13281.08232.99883.09911.75741.7526
H62.11331.08373.75432.53081.75741.7564
H72.14381.08613.12122.75551.75261.7564

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 111.107 C1 C2 H6 109.453
C1 C2 H7 111.772 C2 C1 Cl3 116.982
C2 C1 H4 123.212 H5 C2 H6 108.458
H5 C2 H7 107.851 H6 C2 H7 108.091
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.240      
2 C -0.489      
3 Cl -0.052      
4 H 0.213      
5 H 0.196      
6 H 0.183      
7 H 0.189      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.536 0.690 0.362 2.653
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -26.156 0.073 0.114
y 0.073 -25.001 0.578
z 0.114 0.578 -26.886
Traceless
 xyz
x -0.212 0.073 0.114
y 0.073 1.520 0.578
z 0.114 0.578 -1.308
Polar
3z2-r2-2.615
x2-y2-1.155
xy0.073
xz0.114
yz0.578


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> 78.665
(<r2>)1/2 8.869