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/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-537.566727
Energy at 298.15K-537.570538
HF Energy-537.566727
Nuclear repulsion energy94.785228
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/aug-cc-pVTZ
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 3341 3341 11.68      
2 A 3237 3237 16.93      
3 A 3207 3207 22.05      
4 A 3148 3148 20.26      
5 A 1602 1602 2.75      
6 A 1590 1590 8.52      
7 A 1537 1537 3.93      
8 A 1402 1402 43.02      
9 A 1182 1182 1.00      
10 A 1111 1111 5.93      
11 A 1098 1098 15.09      
12 A 760 760 32.67      
13 A 610 610 22.59      
14 A 357 357 1.52      
15 A 202 202 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 12191.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 12191.4 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/aug-cc-pVTZ
ABC
1.38993 0.18454 0.16860

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/aug-cc-pVTZ

Point Group is C1

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.453 0.614 -0.109
C2 1.645 -0.272 0.015
Cl3 -1.112 -0.128 0.009
H4 0.465 1.613 0.277
H5 1.584 -1.098 -0.681
H6 2.543 0.296 -0.195
H7 1.729 -0.682 1.017

Atom - Atom Distances (Å)
  C1 C2 Cl3 H4 H5 H6 H7
C11.49011.73621.07102.13092.11582.1392
C21.49012.76032.23941.08211.08321.0865
Cl31.73622.76032.36492.94703.68503.0648
H41.07102.23942.36493.08622.50552.7233
H52.13091.08212.94703.08621.76041.7542
H62.11581.08323.68502.50551.76041.7579
H72.13921.08653.06482.72331.75421.7579

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 110.874 C1 C2 H6 109.603
C1 C2 H7 111.286 C2 C1 Cl3 117.437
C2 C1 H4 121.070 H5 C2 H6 108.783
H5 C2 H7 107.981 H6 C2 H7 108.234
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.363      
2 C -0.744      
3 Cl -0.220      
4 H 0.394      
5 H 0.327      
6 H 0.298      
7 H 0.307      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.846 0.484 0.307 1.932
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.465 0.337 0.107
y 0.337 -25.112 0.579
z 0.107 0.579 -26.717
Traceless
 xyz
x 0.449 0.337 0.107
y 0.337 0.979 0.579
z 0.107 0.579 -1.428
Polar
3z2-r2-2.856
x2-y2-0.353
xy0.337
xz0.107
yz0.579


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> 75.790
(<r2>)1/2 8.706