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 CCO (Dicarbon monoxide)

using model chemistry: M06-2X/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 3Σ
2 1 yes C*V 1Π

State 1 (3Σ)

Jump to S2C1
Energy calculated at M06-2X/cc-pVTZ
 hartrees
Energy at 0K-151.257976
Energy at 298.15K-151.256491
HF Energy-151.257976
Nuclear repulsion energy46.158586
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/cc-pVTZ
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 2100 2006 217.57      
2 Σ 1130 1079 14.85      
3 Π 451 430 37.50      
3 Π 451 430 37.50      

Unscaled Zero Point Vibrational Energy (zpe) 2065.7 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 1972.9 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/cc-pVTZ
B
0.38967

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.411
C2 0.000 0.000 -0.056
O3 0.000 0.000 1.100

Atom - Atom Distances (Å)
  C1 C2 O3
C11.35462.5104
C21.35461.1558
O32.51041.1558

picture of Dicarbon monoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.210      
2 C 0.289      
3 O -0.079      


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 1.261 1.261
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -15.878 0.000 0.000
y 0.000 -15.878 0.000
z 0.000 0.000 -22.227
Traceless
 xyz
x 3.175 0.000 0.000
y 0.000 3.175 0.000
z 0.000 0.000 -6.349
Polar
3z2-r2-12.698
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 2.537 0.000 0.000
y 0.000 2.537 0.000
z 0.000 0.000 5.424


<r2> (average value of r2) Å2
<r2> 32.873
(<r2>)1/2 5.733

State 2 (1Π)

Jump to S1C1
Energy calculated at M06-2X/cc-pVTZ
 hartrees
Energy at 0K-151.216542
Energy at 298.15K-151.215018
HF Energy-151.216542
Nuclear repulsion energy46.022204
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/cc-pVTZ
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 2110 2015 161.43      
2 Σ 1135 1084 30.20      
3 Π 514 491 5.91      
3 Π 357 341 59.65      

Unscaled Zero Point Vibrational Energy (zpe) 2057.4 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 1965.0 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/cc-pVTZ
B
0.38741

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.415
C2 0.000 0.000 -0.056
O3 0.000 0.000 1.103

Atom - Atom Distances (Å)
  C1 C2 O3
C11.35832.5177
C21.35831.1594
O32.51771.1594

picture of Dicarbon monoxide state 2 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at M06-2X/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.183      
2 C 0.272      
3 O -0.089      


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 1.062 1.062
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -14.277 0.000 0.000
y 0.000 -17.670 0.000
z 0.000 0.000 -22.000
Traceless
 xyz
x 5.558 0.000 0.000
y 0.000 0.469 0.000
z 0.000 0.000 -6.027
Polar
3z2-r2-12.053
x2-y23.393
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.379 0.000 0.000
y 0.000 2.233 0.000
z 0.000 0.000 5.351


<r2> (average value of r2) Å2
<r2> 32.992
(<r2>)1/2 5.744