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

using model chemistry: MP2/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31G(2df,p)
 hartrees
Energy at 0K-2683.898643
Energy at 298.15K-2683.902596
HF Energy-2683.376586
Nuclear repulsion energy145.591271
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 MP2/6-31G(2df,p)
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' 3111 2938 20.18      
2 A' 1806 1706 309.37      
3 A' 1343 1269 52.51      
4 A' 681 643 167.86      
5 A' 377 356 7.59      
6 A" 938 886 3.13      

Unscaled Zero Point Vibrational Energy (zpe) 4128.2 cm-1
Scaled (by 0.9445) Zero Point Vibrational Energy (zpe) 3899.1 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 MP2/6-31G(2df,p)
ABC
2.49946 0.13809 0.13086

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G(2df,p)

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.376 -1.174 0.000
O2 -0.464 -2.016 0.000
H3 1.459 -1.341 0.000
Br4 0.000 0.700 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.18941.09611.9122
O21.18942.03902.7558
H31.09612.03902.5092
Br41.91222.75582.5092

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 126.241 O2 C1 Br4 123.692
H3 C1 Br4 110.068
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability