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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: B2PLYP=FULLultrafine/6-31G(2df,p)

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 B2PLYP=FULLultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-5180.831410
Energy at 298.15K 
HF Energy-5180.627323
Nuclear repulsion energy330.130893
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 B2PLYP=FULLultrafine/6-31G(2df,p)
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 616 616 10.21      
2 A1 208 208 0.47      
3 B2 695 695 290.42      

Unscaled Zero Point Vibrational Energy (zpe) 759.6 cm-1
Scaled (by 1) 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 B2PLYP=FULLultrafine/6-31G(2df,p)
ABC
1.31141 0.04543 0.04391

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.989
Br2 0.000 1.533 -0.085
Br3 0.000 -1.533 -0.085

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.87181.8718
Br21.87183.0665
Br31.87183.0665

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 109.999
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at B2PLYP=FULLultrafine/6-31G(2df,p)
 hartrees
Energy at 0K-5180.619831
Energy at 298.15K-5180.624898
HF Energy-5180.619831
Nuclear repulsion energy320.281241
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 B2PLYP=FULLultrafine/6-31G(2df,p)
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 544 544 0.06      
2 A1 193 193 0.08      
3 B2 943 943 149.20      

Unscaled Zero Point Vibrational Energy (zpe) 840.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 840.2 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 B2PLYP=FULLultrafine/6-31G(2df,p)
ABC
2.58811 0.03966 0.03906

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/6-31G(2df,p)

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.704
Br2 0.000 1.641 -0.060
Br3 0.000 -1.641 -0.060

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.81031.8103
Br21.81033.2821
Br31.81033.2821

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