return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3PW91/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at B3PW91/cc-pVTZ
 hartrees
Energy at 0K-2688.133087
Energy at 298.15K-2688.137003
HF Energy-2688.133087
Nuclear repulsion energy144.100727
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 B3PW91/cc-pVTZ
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' 3043 2926 18.85      
2 A' 1874 1802 446.25      
3 A' 1296 1246 53.48      
4 A' 646 621 168.00      
5 A' 361 347 11.51      
6 A" 916 881 3.94      

Unscaled Zero Point Vibrational Energy (zpe) 4068.2 cm-1
Scaled (by 0.9616) Zero Point Vibrational Energy (zpe) 3912.0 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 B3PW91/cc-pVTZ
ABC
2.51901 0.13465 0.12782

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.373 -1.206 0.000
O2 -0.462 -2.033 0.000
H3 1.458 -1.362 0.000
Br4 0.000 0.710 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.17491.09671.9519
O21.17492.03372.7819
H31.09672.03372.5336
Br41.95192.78192.5336

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 127.057 O2 C1 Br4 123.760
H3 C1 Br4 109.183
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.168      
2 O -0.161      
3 H 0.098      
4 Br -0.105      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.778 -0.031 0.000 1.778
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.426 -3.418 0.000
y -3.418 -30.877 0.000
z 0.000 0.000 -29.105
Traceless
 xyz
x 1.565 -3.418 0.000
y -3.418 -2.112 0.000
z 0.000 0.000 0.547
Polar
3z2-r21.094
x2-y22.451
xy-3.418
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.146 -0.122 0.000
y -0.122 7.514 0.000
z 0.000 0.000 3.161


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