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 C3O (Tricarbon monoxide)

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 C*V 1Σ
Energy calculated at B3LYP/CEP-31G*
 hartrees
Energy at 0K-32.761426
Energy at 298.15K-32.759478
HF Energy-32.761426
Nuclear repulsion energy35.214986
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 Σ 2351 2270 1549.34      
2 Σ 1960 1893 12.88      
3 Σ 955 922 2.91      
4 Π 592 571 30.43      
4 Π 592 571 30.43      
5 Π 258 249 5.48      
5 Π 258 249 5.48      

Unscaled Zero Point Vibrational Energy (zpe) 3482.0 cm-1
Scaled (by 0.9657) Zero Point Vibrational Energy (zpe) 3362.6 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
0.15159

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -2.089
C2 0.000 0.000 -0.775
C3 0.000 0.000 0.557
O4 0.000 0.000 1.730

Atom - Atom Distances (Å)
  C1 C2 C3 O4
C11.31432.64613.8197
C21.31431.33182.5054
C32.64611.33181.1736
O43.81972.50541.1736

picture of Tricarbon monoxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 C3 180.000 C2 C3 O4 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.029      
2 C 0.641      
3 C -0.730      
4 O 0.118      


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 1.973 1.973
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -21.102 0.000 0.000
y 0.000 -21.102 0.000
z 0.000 0.000 -29.844
Traceless
 xyz
x 4.371 0.000 0.000
y 0.000 4.371 0.000
z 0.000 0.000 -8.742
Polar
3z2-r2-17.484
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 2.377 0.000 0.000
y 0.000 2.377 0.000
z 0.000 0.000 9.858


<r2> (average value of r2) Å2
<r2> 54.069
(<r2>)1/2 7.353