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

using model chemistry: HF/CEP-121G

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-121G
 hartrees
Energy at 0K-34.821973
Energy at 298.15K-34.825965
HF Energy-34.821973
Nuclear repulsion energy31.071452
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-121G
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' 3277 2990 20.24      
2 A' 1851 1689 565.17      
3 A' 1433 1308 135.24      
4 A' 683 623 185.14      
5 A' 392 358 5.17      
6 A" 993 906 3.96      

Unscaled Zero Point Vibrational Energy (zpe) 4314.2 cm-1
Scaled (by 0.9125) Zero Point Vibrational Energy (zpe) 3936.7 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-121G
ABC
2.43241 0.13320 0.12628

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/CEP-121G

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.386 -1.209 0.000
O2 -0.471 -2.044 0.000
H3 1.454 -1.389 0.000
Br4 0.000 0.714 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.19681.08261.9618
O21.19682.03352.7985
H31.08262.03352.5565
Br41.96182.79852.5565

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 126.206 O2 C1 Br4 122.899
H3 C1 Br4 110.894
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.099      
2 O -0.165      
3 H 0.189      
4 Br 0.075      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.552 0.212 0.000 2.561
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.581 -4.608 0.000
y -4.608 -29.927 0.000
z 0.000 0.000 -26.254
Traceless
 xyz
x 2.509 -4.608 0.000
y -4.608 -4.009 0.000
z 0.000 0.000 1.500
Polar
3z2-r23.000
x2-y24.345
xy-4.608
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.626 -0.044 0.000
y -0.044 6.742 0.000
z 0.000 0.000 1.309


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