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

using model chemistry: QCISD/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at QCISD/6-31G*
 hartrees
Energy at 0K-2683.620342
Energy at 298.15K-2683.624253
HF Energy-2683.183866
Nuclear repulsion energy142.951080
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 QCISD/6-31G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 A' 3118 2969 26.32      
2 A' 1850 1762 357.62      
3 A' 1346 1282 69.78      
4 A' 653 622 162.54      
5 A' 362 345 9.29      
6 A" 916 873 2.74      

Unscaled Zero Point Vibrational Energy (zpe) 4122.7 cm-1
Scaled (by 0.9523) Zero Point Vibrational Energy (zpe) 3926.0 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 QCISD/6-31G*
ABC
2.45151 0.13276 0.12594

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.381 -1.212 0.000
O2 -0.469 -2.048 0.000
H3 1.466 -1.378 0.000
Br4 0.000 0.715 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.19231.09781.9641
O21.19232.04732.8031
H31.09782.04732.5553
Br41.96412.80312.5553

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 126.710 O2 C1 Br4 123.403
H3 C1 Br4 109.887
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability