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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: B2PLYP=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 B2PLYP=FULL/cc-pVTZ
 hartrees
Energy at 0K-5185.610434
Energy at 298.15K-5185.615451
HF Energy-5185.381098
Nuclear repulsion energy326.356596
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=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 604 577 13.22      
2 A1 197 189 0.61      
3 B2 655 626 333.67      

Unscaled Zero Point Vibrational Energy (zpe) 728.0 cm-1
Scaled (by 0.9558) Zero Point Vibrational Energy (zpe) 695.8 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 B2PLYP=FULL/cc-pVTZ
ABC
1.29153 0.04435 0.04288

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.996
Br2 0.000 1.552 -0.085
Br3 0.000 -1.552 -0.085

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.89171.8917
Br21.89173.1036
Br31.89173.1036

picture of dibromomethylene state 1 conformation 1
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