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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: CCSD(T)/TZVP

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)/TZVP
 hartrees
Energy at 0K-5183.183973
Energy at 298.15K-5183.188953
HF Energy-5182.578138
Nuclear repulsion energy324.015754
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)/TZVP
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 593 571        
2 A1 190 183        
3 B2 622 599        

Unscaled Zero Point Vibrational Energy (zpe) 702.3 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 676.0 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)/TZVP
ABC
1.25739 0.04379 0.04232

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.010
Br2 0.000 1.562 -0.087
Br3 0.000 -1.562 -0.087

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.90811.9081
Br21.90813.1234
Br31.90813.1234

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 109.856
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at CCSD(T)/TZVP
 hartrees
Energy at 0K-5183.161604
Energy at 298.15K-5183.166622
HF Energy-5182.596690
Nuclear repulsion energy314.150411
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)/TZVP
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 527 507        
2 A1 183 176        
3 B2 845 813        

Unscaled Zero Point Vibrational Energy (zpe) 777.4 cm-1
Scaled (by 0.9625) Zero Point Vibrational Energy (zpe) 748.2 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)/TZVP
ABC
2.40446 0.03825 0.03765

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.730
Br2 0.000 1.671 -0.063
Br3 0.000 -1.671 -0.063

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.84951.8495
Br21.84953.3419
Br31.84953.3419

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