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All results from a given calculation for C3O2 (Carbon suboxide)

using model chemistry: G3

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 G3
 hartrees
Energy at 0K-264.585019
Energy at 298.15K-264.579427
HF Energy-263.278799
Nuclear repulsion energy124.072233
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/6-31G*
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 2475 2332 0.00 40.79 0.28 0.44
2 Σg 844 796 0.00 32.53 0.26 0.41
3 Σu 2464 2321 5424.53 0.00 0.00 0.00
4 Σu 1809 1704 59.10 0.00 0.00 0.00
5 Πg 672 633 0.00 0.17 0.75 0.86
5 Πg 672 633 0.00 0.17 0.75 0.86
6 Πu 681 642 163.50 0.00 0.00 0.00
6 Πu 681 642 163.50 0.00 0.00 0.00
7 Πu 86 81 0.57 0.00 0.00 0.00
7 Πu 86 81 0.57 0.00 0.00 0.00

Unscaled Zero Point Vibrational Energy (zpe) 5235.0 cm-1
Scaled (by 0.9422) Zero Point Vibrational Energy (zpe) 4932.4 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 MP2=FULL/6-31G*
B
0.07238

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-31G*

Point Group is D∞h

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.000
C2 0.000 0.000 1.278
C3 0.000 0.000 -1.278
O4 0.000 0.000 2.461
O5 0.000 0.000 -2.461

Atom - Atom Distances (Å)
  C1 C2 C3 O4 O5
C11.27821.27822.46062.4606
C21.27822.55641.18243.7388
C31.27822.55643.73881.1824
O42.46061.18243.73884.9211
O52.46063.73881.18244.9211

picture of Carbon suboxide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C2 O4 180.000 C1 C3 O5 180.000
C2 C1 C3 180.000
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability