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

using model chemistry: QCISD/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 QCISD/6-31G(2df,p)
 hartrees
Energy at 0K-2683.919443
Energy at 298.15K-2683.923404
HF Energy-2683.377106
Nuclear repulsion energy145.633661
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(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' 3102 2939 21.96      
2 A' 1848 1751 329.60      
3 A' 1354 1283 52.88      
4 A' 684 648 153.09      
5 A' 381 361 4.40      
6 A" 943 893 2.43      

Unscaled Zero Point Vibrational Energy (zpe) 4156.5 cm-1
Scaled (by 0.9474) Zero Point Vibrational Energy (zpe) 3937.8 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(2df,p)
ABC
2.50276 0.13818 0.13095

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.376 -1.177 0.000
O2 -0.464 -2.013 0.000
H3 1.457 -1.354 0.000
Br4 0.000 0.701 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.18471.09601.9148
O21.18472.03112.7528
H31.09602.03112.5191
Br41.91482.75282.5191

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 125.834 O2 C1 Br4 123.552
H3 C1 Br4 110.614
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability