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: HF/6-311+G(3df,2pd)

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 HF/6-311+G(3df,2pd)
 hartrees
Energy at 0K-112.781261
Energy at 298.15K-112.780009
HF Energy-112.781261
Nuclear repulsion energy23.037873
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 HF/6-311+G(3df,2pd)
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 2430 2201 145.15      

Unscaled Zero Point Vibrational Energy (zpe) 1214.9 cm-1
Scaled (by 0.906) Zero Point Vibrational Energy (zpe) 1100.7 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 HF/6-311+G(3df,2pd)
B
2.02261

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311+G(3df,2pd)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.630
O2 0.000 0.000 0.473

Atom - Atom Distances (Å)
  C1 O2
C11.1026
O21.1026

picture of Carbon monoxide state 1 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311+G(3df,2pd) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.357      
2 O -0.357      


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 -0.146 0.146
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -10.149 0.000 0.000
y 0.000 -10.149 0.000
z 0.000 0.000 -12.343
Traceless
 xyz
x 1.097 0.000 0.000
y 0.000 1.097 0.000
z 0.000 0.000 -2.194
Polar
3z2-r2-4.389
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 1.612 0.000 0.000
y 0.000 1.612 0.000
z 0.000 0.000 2.082


<r2> (average value of r2) Å2
<r2> 10.963
(<r2>)1/2 3.311