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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: CCSD(T)=FULL/6-31G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C2V 1A1
2 1 yes C2V 3B1

State 1 (1A1)

Jump to S2C1
Energy calculated at CCSD(T)=FULL/6-31G*
 hartrees
Energy at 0K-5177.965463
Energy at 298.15K-5177.970441
HF Energy-5177.522395
Nuclear repulsion energy323.486036
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 CCSD(T)=FULL/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 A1 593 576        
2 A1 199 193        
3 B2 614 596        

Unscaled Zero Point Vibrational Energy (zpe) 703.0 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 682.4 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 CCSD(T)=FULL/6-31G*
ABC
1.22595 0.04378 0.04227

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.023
Br2 0.000 1.562 -0.088
Br3 0.000 -1.562 -0.088

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.91641.9164
Br21.91643.1238
Br31.91643.1238

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 109.179
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at CCSD(T)=FULL/6-31G*
 hartrees
Energy at 0K-5177.941804
Energy at 298.15K-5177.946821
HF Energy-5177.539340
Nuclear repulsion energy315.369900
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 CCSD(T)=FULL/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 A1 535 519        
2 A1 185 180        
3 B2 845 820        

Unscaled Zero Point Vibrational Energy (zpe) 782.5 cm-1
Scaled (by 0.9707) Zero Point Vibrational Energy (zpe) 759.6 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 CCSD(T)=FULL/6-31G*
ABC
2.25185 0.03877 0.03812

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/6-31G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.755
Br2 0.000 1.660 -0.065
Br3 0.000 -1.660 -0.065

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.85091.8509
Br21.85093.3193
Br31.85093.3193

picture of dibromomethylene state 2 conformation 1
More geometry information
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability