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All results from a given calculation for COBr2 (Carbonic dibromide)

using model chemistry: ROHF/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 ROHF/3-21G*
 hartrees
Energy at 0K-5232.614637
Energy at 298.15K-5232.620712
HF Energy-5232.614637
Nuclear repulsion energy450.910927
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/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 1956 1777 311.28      
2 A1 471 428 4.12      
3 A1 198 180 0.08      
4 B1 581 528 8.16      
5 B2 841 764 477.14      
6 B2 389 354 0.27      

Unscaled Zero Point Vibrational Energy (zpe) 2217.6 cm-1
Scaled (by 0.9085) Zero Point Vibrational Energy (zpe) 2014.7 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 ROHF/3-21G*
ABC
0.20610 0.04276 0.03541

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.780
O2 0.000 0.000 1.958
Br3 0.000 1.580 -0.291
Br4 0.000 -1.580 -0.291

Atom - Atom Distances (Å)
  C1 O2 Br3 Br4
C11.17791.90891.9089
O21.17792.74832.7483
Br31.90892.74833.1608
Br41.90892.74833.1608

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 124.114 O2 C1 Br4 124.114
Br3 C1 Br4 111.772
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at ROHF/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.454      
2 O -0.471      
3 Br 0.008      
4 Br 0.008      


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 -1.704 1.704
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -46.470 0.000 0.000
y 0.000 -44.132 0.000
z 0.000 0.000 -51.194
Traceless
 xyz
x 1.192 0.000 0.000
y 0.000 4.700 0.000
z 0.000 0.000 -5.893
Polar
3z2-r2-11.786
x2-y2-2.339
xy0.000
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