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

using model chemistry: mPW1PW91/aug-cc-pVDZ

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/aug-cc-pVDZ
 hartrees
Energy at 0K-2688.226896
Energy at 298.15K-2688.230823
HF Energy-2688.226896
Nuclear repulsion energy144.258156
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/aug-cc-pVDZ
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' 3077 2949 12.09      
2 A' 1871 1793 455.82      
3 A' 1289 1235 49.29      
4 A' 655 628 173.27      
5 A' 366 351 9.78      
6 A" 919 880 4.94      

Unscaled Zero Point Vibrational Energy (zpe) 4088.5 cm-1
Scaled (by 0.9583) Zero Point Vibrational Energy (zpe) 3918.0 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 mPW1PW91/aug-cc-pVDZ
ABC
2.48761 0.13529 0.12831

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVDZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.375 -1.200 0.000
O2 -0.465 -2.029 0.000
H3 1.466 -1.362 0.000
Br4 0.000 0.708 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.18021.10271.9453
O21.18022.04302.7769
H31.10272.04302.5368
Br41.94532.77692.5368

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 126.957 O2 C1 Br4 123.498
H3 C1 Br4 109.545
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.185      
2 O -0.325      
3 H -0.052      
4 Br 0.193      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.810 0.073 0.000 1.811
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.650 -3.683 0.000
y -3.683 -31.241 0.000
z 0.000 0.000 -29.344
Traceless
 xyz
x 1.643 -3.683 0.000
y -3.683 -2.244 0.000
z 0.000 0.000 0.601
Polar
3z2-r21.202
x2-y22.591
xy-3.683
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.996 -0.051 0.000
y -0.051 8.021 0.000
z 0.000 0.000 4.120


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