return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: MP2=FULL/6-311G*

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=FULL/6-311G*
 hartrees
Energy at 0K-2686.580499
Energy at 298.15K-2686.584424
HF Energy-2685.694589
Nuclear repulsion energy143.648818
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=FULL/6-311G*
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' 3109 2944 28.14      
2 A' 1823 1727 385.90      
3 A' 1352 1280 75.29      
4 A' 657 622 185.31      
5 A' 365 346 18.32      
6 A" 923 874 4.14      

Unscaled Zero Point Vibrational Energy (zpe) 4113.9 cm-1
Scaled (by 0.9471) Zero Point Vibrational Energy (zpe) 3896.3 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 MP2=FULL/6-311G*
ABC
2.49085 0.13391 0.12708

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/6-311G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.376 -1.206 0.000
O2 -0.465 -2.040 0.000
H3 1.461 -1.365 0.000
Br4 0.000 0.712 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.18491.09641.9542
O21.18492.04082.7914
H31.09642.04082.5390
Br41.95422.79142.5390

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 126.870 O2 C1 Br4 123.698
H3 C1 Br4 109.432
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability