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 COBr2 (Carbonic dibromide)

using model chemistry: B3PW91/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
Energy calculated at B3PW91/3-21G*
 hartrees
Energy at 0K-5236.698424
Energy at 298.15K-5236.704370
HF Energy-5236.698424
Nuclear repulsion energy449.608308
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 B3PW91/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A1 1812 1739 243.98      
2 A1 449 431 5.52      
3 A1 187 179 0.14      
4 B1 546 523 1.99      
5 B2 753 723 447.80      
6 B2 351 336 1.58      

Unscaled Zero Point Vibrational Energy (zpe) 2048.9 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 1965.7 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 B3PW91/3-21G*
ABC
0.19700 0.04321 0.03544

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.802
O2 0.000 0.000 2.001
Br3 0.000 1.572 -0.297
Br4 0.000 -1.572 -0.297

Atom - Atom Distances (Å)
  C1 O2 Br3 Br4
C11.19851.91871.9187
O21.19852.78462.7846
Br31.91872.78463.1444
Br41.91872.78463.1444

picture of Carbonic dibromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
O2 C1 Br3 124.973 O2 C1 Br4 124.973
Br3 C1 Br4 110.054
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3PW91/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.303      
2 O -0.365      
3 Br 0.031      
4 Br 0.031      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -1.386 1.386
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -45.858 0.000 0.000
y 0.000 -43.536 0.000
z 0.000 0.000 -49.341
Traceless
 xyz
x 0.581 0.000 0.000
y 0.000 4.064 0.000
z 0.000 0.000 -4.644
Polar
3z2-r2-9.289
x2-y2-2.322
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 3.351 0.000 0.000
y 0.000 9.275 0.000
z 0.000 0.000 6.190


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