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

using model chemistry: LSDA/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 LSDA/3-21G
 hartrees
Energy at 0K-2671.915096
Energy at 298.15K-2671.919025
HF Energy-2671.915096
Nuclear repulsion energy143.934412
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 LSDA/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' 2975 2926 29.91      
2 A' 1768 1739 283.86      
3 A' 1297 1275 27.12      
4 A' 659 648 141.44      
5 A' 371 365 5.89      
6 A" 919 904 9.34      

Unscaled Zero Point Vibrational Energy (zpe) 3994.3 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 3928.8 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 LSDA/3-21G
ABC
2.51641 0.13419 0.12740

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.372 -1.184 0.000
O2 -0.463 -2.053 0.000
H3 1.471 -1.303 0.000
Br4 0.000 0.709 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.20531.10551.9290
O21.20532.07412.8004
H31.10552.07412.4929
Br41.92902.80042.4929

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 127.636 O2 C1 Br4 125.021
H3 C1 Br4 107.343
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.108      
2 O -0.312      
3 H 0.250      
4 Br -0.046      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.642 0.244 0.000 1.660
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.099 -3.135 0.000
y -3.135 -30.378 0.000
z 0.000 0.000 -28.681
Traceless
 xyz
x 1.430 -3.135 0.000
y -3.135 -1.988 0.000
z 0.000 0.000 0.557
Polar
3z2-r21.115
x2-y22.278
xy-3.135
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.283 -0.126 0.000
y -0.126 6.445 0.000
z 0.000 0.000 2.123


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