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: ROHF/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at ROHF/6-31G*
 hartrees
Energy at 0K-2683.186349
Energy at 298.15K-2683.190350
HF Energy-2683.186349
Nuclear repulsion energy145.689760
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 ROHF/6-31G*
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' 3303 2941 25.84      
2 A' 2044 1820 531.48      
3 A' 1447 1289 117.91      
4 A' 706 629 199.49      
5 A' 398 354 7.70      
6 A" 1028 916 0.49      

Unscaled Zero Point Vibrational Energy (zpe) 4462.7 cm-1
Scaled (by 0.8904) Zero Point Vibrational Energy (zpe) 3973.6 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 ROHF/6-31G*
ABC
2.54257 0.13795 0.13085

See section I.F.4 to change rotational constant units
Geometric Data calculated at ROHF/6-31G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.373 -1.194 0.000
O2 -0.460 -2.006 0.000
H3 1.442 -1.365 0.000
Br4 0.000 0.702 0.000

Atom - Atom Distances (Å)
  C1 O2 H3 Br4
C11.16241.08311.9325
O21.16242.00682.7466
H31.08312.00682.5205
Br41.93252.74662.5205

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 126.639 O2 C1 Br4 123.165
H3 C1 Br4 110.196
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.306      
2 O -0.374      
3 H 0.226      
4 Br -0.158      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  2.096 0.099 0.000 2.098
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.485 -3.961 0.000
y -3.961 -31.485 0.000
z 0.000 0.000 -29.164
Traceless
 xyz
x 1.840 -3.961 0.000
y -3.961 -2.661 0.000
z 0.000 0.000 0.821
Polar
3z2-r21.641
x2-y23.001
xy-3.961
xz0.000
yz0.000


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


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