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All results from a given calculation for CBr2 (dibromomethylene)

using model chemistry: MP2/6-31G

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 MP2/6-31G
 hartrees
Energy at 0K-5177.387413
Energy at 298.15K-5177.392261
HF Energy-5177.228711
Nuclear repulsion energy309.966504
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 MP2/6-31G
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 521 498 50.41      
2 A1 180 172 0.46      
3 B2 524 502 355.98      

Unscaled Zero Point Vibrational Energy (zpe) 612.3 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 585.9 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 MP2/6-31G
ABC
1.11148 0.04027 0.03886

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 1.074
Br2 0.000 1.629 -0.092
Br3 0.000 -1.629 -0.092

Atom - Atom Distances (Å)
  C1 Br2 Br3
C12.00312.0031
Br22.00313.2573
Br32.00313.2573

picture of dibromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 108.791
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3B1)

Jump to S1C1
Energy calculated at MP2/6-31G
 hartrees
Energy at 0K-5177.381120
Energy at 298.15K-5177.386059
HF Energy-5177.255685
Nuclear repulsion energy305.414960
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 MP2/6-31G
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 476 455 4.21      
2 A1 171 163 0.00      
3 B2 795 761 132.82      

Unscaled Zero Point Vibrational Energy (zpe) 720.9 cm-1
Scaled (by 0.9568) Zero Point Vibrational Energy (zpe) 689.8 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 MP2/6-31G
ABC
2.22110 0.03622 0.03564

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.760
Br2 0.000 1.717 -0.065
Br3 0.000 -1.717 -0.065

Atom - Atom Distances (Å)
  C1 Br2 Br3
C11.90511.9051
Br21.90513.4344
Br31.90513.4344

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