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: B2PLYP/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 B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-2687.690159
Energy at 298.15K-2687.694071
HF Energy-2687.486855
Nuclear repulsion energy143.643582
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 B2PLYP/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' 3075 2950 19.65      
2 A' 1830 1755 411.43      
3 A' 1307 1254 58.54      
4 A' 642 616 172.75      
5 A' 358 343 13.63      
6 A" 919 881 3.70      

Unscaled Zero Point Vibrational Energy (zpe) 4064.7 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 3899.7 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 B2PLYP/cc-pVTZ
ABC
2.50867 0.13373 0.12696

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.373 -1.211 0.000
O2 -0.462 -2.042 0.000
H3 1.456 -1.370 0.000
Br4 0.000 0.714 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.17831.09371.9609
O21.17832.03212.7945
H31.09372.03212.5414
Br41.96092.79452.5414

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 126.831 O2 C1 Br4 123.870
H3 C1 Br4 109.298
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.203      
2 O -0.205      
3 H 0.119      
4 Br -0.117      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  1.941 0.069 0.000 1.942
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.627 -3.694 0.000
y -3.694 -31.512 0.000
z 0.000 0.000 -29.363
Traceless
 xyz
x 1.811 -3.694 0.000
y -3.694 -2.517 0.000
z 0.000 0.000 0.706
Polar
3z2-r21.413
x2-y22.885
xy-3.694
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 4.118 -0.110 0.000
y -0.110 7.580 0.000
z 0.000 0.000 3.122


<r2> (average value of r2) Å2
<r2> 85.027
(<r2>)1/2 9.221