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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: CCSD(T)/cc-pVDZ

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)/cc-pVDZ
 hartrees
Energy at 0K-5182.939864
Energy at 298.15K-5182.944861
HF Energy-5182.519599
Nuclear repulsion energy322.321617
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)/cc-pVDZ
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 597 584        
2 A1 195 191        
3 B2 635 622        

Unscaled Zero Point Vibrational Energy (zpe) 713.6 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 698.5 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)/cc-pVDZ
ABC
1.25177 0.04330 0.04185

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.012
Br2 0.000 1.571 -0.087
Br3 0.000 -1.571 -0.087

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.91681.9168
Br21.91683.1411
Br31.91683.1411

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 110.039
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at CCSD(T)/cc-pVDZ
 hartrees
Energy at 0K-5182.916604
Energy at 298.15K-5182.921629
HF Energy-5182.535644
Nuclear repulsion energy313.035206
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)/cc-pVDZ
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 530 519        
2 A1 183 179        
3 B2 865 847        

Unscaled Zero Point Vibrational Energy (zpe) 789.0 cm-1
Scaled (by 0.9788) Zero Point Vibrational Energy (zpe) 772.3 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)/cc-pVDZ
ABC
2.39376 0.03798 0.03738

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/cc-pVDZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.732
Br2 0.000 1.677 -0.063
Br3 0.000 -1.677 -0.063

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.85581.8558
Br21.85583.3540
Br31.85583.3540

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