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

using model chemistry: QCISD/3-21G

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/3-21G
 hartrees
Energy at 0K-2672.977624
Energy at 298.15K-2672.981487
HF Energy-2672.702424
Nuclear repulsion energy138.844148
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/3-21G
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' 3072 2978 39.19      
2 A' 1707 1654 296.62      
3 A' 1340 1299 84.99      
4 A' 605 587 128.50      
5 A' 338 328 9.34      
6 A" 907 879 5.53      

Unscaled Zero Point Vibrational Energy (zpe) 3984.7 cm-1
Scaled (by 0.9692) Zero Point Vibrational Energy (zpe) 3861.9 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/3-21G
ABC
2.39919 0.12438 0.11825

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD/3-21G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.387 -1.260 0.000
O2 -0.474 -2.114 0.000
H3 1.471 -1.399 0.000
Br4 0.000 0.739 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.21291.09342.0358
O21.21292.07282.8921
H31.09342.07282.5953
Br42.03582.89212.5953

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 127.914 O2 C1 Br4 123.819
H3 C1 Br4 108.267
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability