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 Cl2 (Chlorine diatomic)

using model chemistry: B1B95/aug-cc-pCVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes D*H 1Σg
Energy calculated at B1B95/aug-cc-pCVTZ
 hartrees
Energy at 0K-920.525607
Energy at 298.15K 
HF Energy-920.525607
Nuclear repulsion energy77.173323
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 B1B95/aug-cc-pCVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σg 577 577 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 288.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 288.7 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 B1B95/aug-cc-pCVTZ
B
0.24552

See section I.F.4 to change rotational constant units
Geometric Data calculated at B1B95/aug-cc-pCVTZ

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
Cl1 0.000 0.000 0.991
Cl2 0.000 0.000 -0.991

Atom - Atom Distances (Å)
  Cl1 Cl2
Cl11.9817
Cl21.9817

picture of Chlorine diatomic state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B1B95/aug-cc-pCVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 Cl 0.000      
2 Cl 0.000      


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


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.216 0.000 0.000
y 0.000 -25.216 0.000
z 0.000 0.000 -22.164
Traceless
 xyz
x -1.526 0.000 0.000
y 0.000 -1.526 0.000
z 0.000 0.000 3.052
Polar
3z2-r26.103
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.653 0.000 0.000
y 0.000 3.653 0.000
z 0.000 0.000 6.125


<r2> (average value of r2) Å2
<r2> 48.494
(<r2>)1/2 6.964