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 CO (Carbon monoxide)

using model chemistry: PBEPBE/cc-pCVQZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at PBEPBE/cc-pCVQZ
 hartrees
Energy at 0K-113.240523
Energy at 298.15K 
HF Energy-113.240523
Nuclear repulsion energy22.375031
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 PBEPBE/cc-pCVQZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2127 2127 58.52      

Unscaled Zero Point Vibrational Energy (zpe) 1063.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1063.7 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 PBEPBE/cc-pCVQZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at PBEPBE/cc-pCVQZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.649
O2 0.000 0.000 0.487

Atom - Atom Distances (Å)
  C1 O2
C11.1352
O21.1352

picture of Carbon monoxide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBEPBE/cc-pCVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.026      
2 O 0.026      


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 0.205 0.205
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.277 0.000 0.000
y 0.000 -10.277 0.000
z 0.000 0.000 -12.283
Traceless
 xyz
x 1.003 0.000 0.000
y 0.000 1.003 0.000
z 0.000 0.000 -2.005
Polar
3z2-r2-4.011
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 1.681 0.000 0.000
y 0.000 1.681 0.000
z 0.000 0.000 2.252


<r2> (average value of r2) Å2
<r2> 11.255
(<r2>)1/2 3.355