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

using model chemistry: mPW1PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at mPW1PW91/3-21G*
 hartrees
Energy at 0K-2675.452290
Energy at 298.15K-2675.456235
HF Energy-2675.452290
Nuclear repulsion energy143.763519
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 mPW1PW91/3-21G*
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' 3099 2942 32.05      
2 A' 1788 1698 320.80      
3 A' 1362 1293 48.21      
4 A' 665 632 156.69      
5 A' 376 357 6.34      
6 A" 953 905 6.87      

Unscaled Zero Point Vibrational Energy (zpe) 4121.5 cm-1
Scaled (by 0.9496) Zero Point Vibrational Energy (zpe) 3913.8 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 mPW1PW91/3-21G*
ABC
2.51624 0.13384 0.12708

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.375 -1.190 0.000
O2 -0.463 -2.052 0.000
H3 1.459 -1.320 0.000
Br4 0.000 0.711 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.20251.09181.9368
O21.20252.05682.8014
H31.09182.05682.4999
Br41.93682.80142.4999

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 127.328 O2 C1 Br4 124.681
H3 C1 Br4 107.990
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.175      
2 O -0.372      
3 H 0.259      
4 Br -0.062      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.804 0.262 0.000 1.823
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.183 -3.470 0.000
y -3.470 -30.727 0.000
z 0.000 0.000 -28.769
Traceless
 xyz
x 1.565 -3.470 0.000
y -3.470 -2.251 0.000
z 0.000 0.000 0.686
Polar
3z2-r21.372
x2-y22.544
xy-3.470
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.237 -0.080 0.000
y -0.080 6.278 0.000
z 0.000 0.000 2.122


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