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

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-34.818331
Energy at 298.15K-34.822313
HF Energy-34.818331
Nuclear repulsion energy31.033013
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 HF/CEP-31G
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' 3341 3011 28.32      
2 A' 1855 1672 546.86      
3 A' 1433 1291 134.14      
4 A' 684 617 185.37      
5 A' 393 354 4.79      
6 A" 990 893 4.82      

Unscaled Zero Point Vibrational Energy (zpe) 4347.4 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 3918.8 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 HF/CEP-31G
ABC
2.42326 0.13308 0.12615

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-31G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.387 -1.208 0.000
O2 -0.472 -2.046 0.000
H3 1.456 -1.392 0.000
Br4 0.000 0.715 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.19981.08481.9614
O21.19982.03602.8004
H31.08482.03602.5609
Br41.96142.80042.5609

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 125.970 O2 C1 Br4 122.893
H3 C1 Br4 111.138
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.154      
2 O -0.117      
3 H 0.216      
4 Br 0.055      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.647 0.288 0.000 2.662
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.568 -4.847 0.000
y -4.847 -30.219 0.000
z 0.000 0.000 -26.258
Traceless
 xyz
x 2.671 -4.847 0.000
y -4.847 -4.307 0.000
z 0.000 0.000 1.636
Polar
3z2-r23.272
x2-y24.652
xy-4.847
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.415 -0.079 0.000
y -0.079 6.693 0.000
z 0.000 0.000 1.262


<r2> (average value of r2) Å2
<r2> 0.000
(<r2>)1/2 0.000