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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: B2PLYP=FULLultrafine/STO-3G

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/STO-3G
 hartrees
Energy at 0K-5128.821083
Energy at 298.15K 
HF Energy-5128.789043
Nuclear repulsion energy318.864536
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/STO-3G
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 686 686 41.91      
2 A1 211 211 0.02      
3 B2 769 769 258.25      

Unscaled Zero Point Vibrational Energy (zpe) 832.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 832.7 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/STO-3G
ABC
1.16900 0.04265 0.04115

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.047
Br2 0.000 1.583 -0.090
Br3 0.000 -1.583 -0.090

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.94871.9487
Br21.94873.1651
Br31.94873.1651

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 108.601
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at B2PLYP=FULLultrafine/STO-3G
 hartrees
Energy at 0K-5128.792077
Energy at 298.15K-5128.797092
HF Energy-5128.792077
Nuclear repulsion energy311.039813
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/STO-3G
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 578 578 6.90      
2 A1 198 198 0.29      
3 B2 981 981 145.94      

Unscaled Zero Point Vibrational Energy (zpe) 878.3 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 878.3 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 B2PLYP=FULLultrafine/STO-3G
ABC
2.25501 0.03763 0.03701

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULLultrafine/STO-3G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.754
Br2 0.000 1.685 -0.065
Br3 0.000 -1.685 -0.065

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.87311.8731
Br21.87313.3695
Br31.87313.3695

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