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

using model chemistry: CCD/aug-cc-pVDZ

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-pVDZ
 hartrees
Energy at 0K-5258.126619
Energy at 298.15K-5258.132569
HF Energy-5257.506395
Nuclear repulsion energy445.755973
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-pVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1877 1810 322.44      
2 A1 435 420 6.28      
3 A1 186 179 0.36      
4 B1 518 499 2.21      
5 B2 781 753 430.23      
6 B2 362 349 0.61      

Unscaled Zero Point Vibrational Energy (zpe) 2079.0 cm-1
Scaled (by 0.9645) Zero Point Vibrational Energy (zpe) 2005.2 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-pVDZ
ABC
0.20725 0.04131 0.03444

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.773
O2 0.000 0.000 1.954
Br3 0.000 1.608 -0.290
Br4 0.000 -1.608 -0.290

Atom - Atom Distances (Å)
  C1 O2 Br3 Br4
C11.18121.92731.9273
O21.18122.76042.7604
Br31.92732.76043.2158
Br41.92732.76043.2158

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 123.458 O2 C1 Br4 123.458
Br3 C1 Br4 113.084
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability