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 CO2 (Carbon dioxide)

using model chemistry: M06-2X/CEP-31G*

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 M06-2X/CEP-31G*
 hartrees
Energy at 0K-37.607063
Energy at 298.15K-37.607132
HF Energy-37.607063
Nuclear repulsion energy29.797316
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 M06-2X/CEP-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 Σg 1427 1427 0.00      
2 Σu 2508 2508 852.97      
3 Πu 669 669 41.16      
3 Πu 669 669 41.16      

Unscaled Zero Point Vibrational Energy (zpe) 2636.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 2636.1 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 M06-2X/CEP-31G*
B
0.38357

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/CEP-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
O2 0.000 0.000 1.172
O3 0.000 0.000 -1.172

Atom - Atom Distances (Å)
  C1 O2 O3
C11.17211.1721
O21.17212.3442
O31.17212.3442

picture of Carbon dioxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 C1 O3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.101      
2 O -0.051      
3 O -0.051      


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 -14.562 0.000 0.000
y 0.000 -14.562 0.000
z 0.000 0.000 -19.374
Traceless
 xyz
x 2.406 0.000 0.000
y 0.000 2.406 0.000
z 0.000 0.000 -4.813
Polar
3z2-r2-9.625
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 1.221 0.000 0.000
y 0.000 1.221 0.000
z 0.000 0.000 3.457


<r2> (average value of r2) Å2
<r2> 26.583
(<r2>)1/2 5.156