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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: CCSD(T)/6-311G*

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)/6-311G*
 hartrees
Energy at 0K-5182.910197
Energy at 298.15K-5182.915189
HF Energy-5182.490955
Nuclear repulsion energy323.448804
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)/6-311G*
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 598 576        
2 A1 194 187        
3 B2 635 611        

Unscaled Zero Point Vibrational Energy (zpe) 713.6 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 686.9 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)/6-311G*
ABC
1.27829 0.04352 0.04209

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.002
Br2 0.000 1.567 -0.086
Br3 0.000 -1.567 -0.086

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.90701.9070
Br21.90703.1330
Br31.90703.1330

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 110.465
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at CCSD(T)/6-311G*
 hartrees
Energy at 0K-5182.888825
Energy at 298.15K-5182.893852
HF Energy-5182.509061
Nuclear repulsion energy314.274718
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)/6-311G*
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 532 512        
2 A1 186 179        
3 B2 867 835        

Unscaled Zero Point Vibrational Energy (zpe) 792.2 cm-1
Scaled (by 0.9626) Zero Point Vibrational Energy (zpe) 762.6 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)/6-311G*
ABC
2.43917 0.03825 0.03766

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.725
Br2 0.000 1.671 -0.062
Br3 0.000 -1.671 -0.062

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.84721.8472
Br21.84723.3421
Br31.84723.3421

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