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: B3LYP/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 B3LYP/CEP-31G*
 hartrees
Energy at 0K-37.629716
Energy at 298.15K-37.629748
HF Energy-37.629716
Nuclear repulsion energy29.537912
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 B3LYP/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 1361 1314 0.00 17.19 0.18 0.30
2 Σu 2405 2323 671.82 0.00 0.00 0.00
3 Πu 635 614 28.56 0.00 0.00 0.00
3 Πu 635 614 28.56 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 2518.5 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 2432.2 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 B3LYP/CEP-31G*
B
0.37692

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/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 1.182
O3 0.000 0.000 -1.182

Atom - Atom Distances (Å)
  C1 O2 O3
C11.18241.1824
O21.18242.3648
O31.18242.3648

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

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.064      
2 O -0.032      
3 O -0.032      


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 -14.668 0.000 0.000
y 0.000 -14.668 0.000
z 0.000 0.000 -19.107
Traceless
 xyz
x 2.219 0.000 0.000
y 0.000 2.219 0.000
z 0.000 0.000 -4.439
Polar
3z2-r2-8.878
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 1.276 0.000 0.000
y 0.000 1.276 0.000
z 0.000 0.000 3.506


<r2> (average value of r2) Å2
<r2> 26.863
(<r2>)1/2 5.183