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All results from a given calculation for COBr2 (Carbonic dibromide)

using model chemistry: CCD/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at CCD/aug-cc-pVTZ
 hartrees
Energy at 0K-5258.546744
Energy at 298.15K-5258.552729
HF Energy-5257.685033
Nuclear repulsion energy449.926141
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 CCD/aug-cc-pVTZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A1 1901 1820 327.29      
2 A1 445 426 5.99      
3 A1 186 178 0.37      
4 B1 535 512 2.35      
5 B2 795 761 429.69      
6 B2 369 353 0.31      

Unscaled Zero Point Vibrational Energy (zpe) 2116.0 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 2025.0 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 CCD/aug-cc-pVTZ
ABC
0.21074 0.04212 0.03510

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.767
O2 0.000 0.000 1.938
Br3 0.000 1.592 -0.287
Br4 0.000 -1.592 -0.287

Atom - Atom Distances (Å)
  C1 O2 Br3 Br4
C11.17131.90951.9095
O21.17132.73622.7362
Br31.90952.73623.1848
Br41.90952.73623.1848

picture of Carbonic dibromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 C1 Br3 123.493 O2 C1 Br4 123.493
Br3 C1 Br4 113.013
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability