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All results from a given calculation for CHBr (bromomethylene)

using model chemistry: CCD/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 CCD/3-21G*
 hartrees
Energy at 0K-2598.589231
Energy at 298.15K-2598.591937
HF Energy-2598.365811
Nuclear repulsion energy68.670105
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 CCD/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' 2774 2653 89.97      
2 A' 1180 1128 5.41      
3 A' 647 619 90.21      

Unscaled Zero Point Vibrational Energy (zpe) 2300.2 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 2200.1 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 CCD/3-21G*
ABC
15.16992 0.40444 0.39394

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.026 1.587 0.000
Br2 0.026 -0.324 0.000
H3 -1.079 1.810 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.91121.1273
Br21.91122.4027
H31.12732.4027

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 101.369
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3A")

Jump to S1C1
Energy calculated at CCD/3-21G*
 hartrees
Energy at 0K-2598.600133
Energy at 298.15K-2598.602846
HF Energy-2598.402041
Nuclear repulsion energy69.677771
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 CCD/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' 3180 3042 7.03      
2 A' 966 924 1.83      
3 A' 729 697 23.55      

Unscaled Zero Point Vibrational Energy (zpe) 2437.4 cm-1
Scaled (by 0.9565) Zero Point Vibrational Energy (zpe) 2331.3 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 CCD/3-21G*
ABC
24.89905 0.40954 0.40291

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.534 0.000
Br2 0.021 -0.325 0.000
H3 -0.860 2.174 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.85911.0891
Br21.85912.6500
H31.08912.6500

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