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: MP4/6-311G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP4/6-311G**
 hartrees
Energy at 0K-2686.193392
Energy at 298.15K-2686.197292
HF Energy-2685.695053
Nuclear repulsion energy142.595860
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 MP4/6-311G**
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' 3058 2966        
2 A' 1771 1717        
3 A' 1323 1283        
4 A' 638 619        
5 A' 353 342        
6 A" 905 878        

Unscaled Zero Point Vibrational Energy (zpe) 4024.0 cm-1
Scaled (by 0.9697) Zero Point Vibrational Energy (zpe) 3902.1 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 MP4/6-311G**
ABC
2.47010 0.13181 0.12513

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.378 -1.216 0.000
O2 -0.467 -2.057 0.000
H3 1.467 -1.371 0.000
Br4 0.000 0.718 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.19201.10031.9697
O21.19202.05172.8134
H31.10032.05172.5523
Br41.96972.81342.5523

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 126.989 O2 C1 Br4 123.837
H3 C1 Br4 109.174
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability