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All results from a given calculation for COHBr (Formyl bromide)

using model chemistry: CBS-Q

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at CBS-Q
 hartrees
Energy at 0K-2686.639111
Energy at 298.15K-2686.634812
HF Energy-2683.272911
Nuclear repulsion energy146.202667
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 CBS-Q
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3270 3270 32.26      
2 A' 2041 2041 557.76      
3 A' 1448 1448 114.09      
4 A' 720 720 198.21      
5 A' 406 406 7.05      
6 A" 1028 1028 0.32      

Unscaled Zero Point Vibrational Energy (zpe) 4456.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4456.3 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 CBS-Q
ABC
2.49048 0.13486 0.12793

See section I.F.4 to change rotational constant units
Geometric Data calculated at CBS-Q

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.371 -1.187 0.000
O2 -0.458 -1.997 0.000
H3 1.444 -1.362 0.000
Br4 0.000 0.699 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.15861.08711.9222
O21.15862.00532.7343
H31.08712.00532.5158
Br41.92222.73432.5158

picture of Formyl bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 C1 H3 126.454 O2 C1 Br4 123.204
H3 C1 Br4 110.341
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability