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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: CCSD(T)=FULL/cc-pVTZ

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/cc-pVTZ
 hartrees
Energy at 0K-5183.426192
Energy at 298.15K-5183.431220
HF Energy-5182.685122
Nuclear repulsion energy327.911550
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/cc-pVTZ
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 607 582        
2 A1 199 191        
3 B2 668 640        

Unscaled Zero Point Vibrational Energy (zpe) 737.1 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 706.1 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/cc-pVTZ
ABC
1.29716 0.04481 0.04331

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.994
Br2 0.000 1.544 -0.085
Br3 0.000 -1.544 -0.085

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.88391.8839
Br21.88393.0878
Br31.88393.0878

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 110.077
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at CCSD(T)=FULL/cc-pVTZ
 hartrees
Energy at 0K-5183.403038
Energy at 298.15K-5183.408085
HF Energy-5182.701222
Nuclear repulsion energy317.669098
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/cc-pVTZ
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 536 513        
2 A1 188 180        
3 B2 896 859        

Unscaled Zero Point Vibrational Energy (zpe) 809.8 cm-1
Scaled (by 0.958) Zero Point Vibrational Energy (zpe) 775.8 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/cc-pVTZ
ABC
2.52640 0.03904 0.03844

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.712
Br2 0.000 1.654 -0.061
Br3 0.000 -1.654 -0.061

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.82601.8260
Br21.82603.3082
Br31.82603.3082

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