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 Cl2O (Dichlorine monoxide)

using model chemistry: mPW1PW91/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at mPW1PW91/6-31G*
 hartrees
Energy at 0K-995.465967
Energy at 298.15K-995.466586
Nuclear repulsion energy137.943848
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 mPW1PW91/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 683 647 0.27      
2 A1 303 287 0.06      
3 B2 701 665 18.64      

Unscaled Zero Point Vibrational Energy (zpe) 843.2 cm-1
Scaled (by 0.9483) Zero Point Vibrational Energy (zpe) 799.6 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 mPW1PW91/6-31G*
ABC
1.43307 0.11925 0.11009

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
O1 0.000 0.000 0.770
Cl2 0.000 1.422 -0.181
Cl3 0.000 -1.422 -0.181

Atom - Atom Distances (Å)
  O1 Cl2 Cl3
O11.71031.7103
Cl21.71032.8435
Cl31.71032.8435

picture of Dichlorine monoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Cl2 O1 Cl3 112.465
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 O -0.456      
2 Cl 0.228      
3 Cl 0.228      


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 -0.765 0.765
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -30.547 0.000 0.000
y 0.000 -26.420 0.000
z 0.000 0.000 -29.837
Traceless
 xyz
x -2.419 0.000 0.000
y 0.000 3.772 0.000
z 0.000 0.000 -1.353
Polar
3z2-r2-2.706
x2-y2-4.127
xy0.000
xz0.000
yz0.000


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> 92.650
(<r2>)1/2 9.625