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All results from a given calculation for CHBr (bromomethylene)

using model chemistry: MP2/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
2 1 yes CS 3A"

State 1 (1A')

Jump to S2C1
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-2598.568270
Energy at 298.15K-2598.570989
HF Energy-2598.366035
Nuclear repulsion energy69.147128
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 MP2/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 2846 2708 89.68      
2 A' 1190 1132 7.70      
3 A' 670 638 90.03      

Unscaled Zero Point Vibrational Energy (zpe) 2353.1 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 2238.5 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 MP2/3-21G*
ABC
15.32212 0.41019 0.39949

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.026 1.576 0.000
Br2 0.026 -0.322 0.000
H3 -1.073 1.797 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.89781.1216
Br21.89782.3870
H31.12162.3870

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 101.358
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3A")

Jump to S1C1
Energy calculated at MP2/3-21G*
 hartrees
Energy at 0K-2598.581585
Energy at 298.15K-2598.584309
HF Energy-2598.402134
Nuclear repulsion energy69.962713
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 MP2/3-21G*
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3236 3079 8.13      
2 A' 992 944 2.00      
3 A' 743 707 30.13      

Unscaled Zero Point Vibrational Energy (zpe) 2485.8 cm-1
Scaled (by 0.9513) Zero Point Vibrational Energy (zpe) 2364.7 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 MP2/3-21G*
ABC
24.84954 0.41302 0.40627

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/3-21G*

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.528 0.000
Br2 0.021 -0.324 0.000
H3 -0.861 2.160 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.85181.0850
Br21.85182.6358
H31.08502.6358

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