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All results from a given calculation for CHBr (bromomethylene)

using model chemistry: CID/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 CID/3-21G*
 hartrees
Energy at 0K-2598.572521
Energy at 298.15K-2598.575234
HF Energy-2598.366080
Nuclear repulsion energy68.922995
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 CID/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' 2858 2659 81.33      
2 A' 1198 1114 6.15      
3 A' 658 612 92.50      

Unscaled Zero Point Vibrational Energy (zpe) 2356.4 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 2192.7 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 CID/3-21G*
ABC
15.39756 0.40726 0.39677

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.026 1.581 0.000
Br2 0.026 -0.323 0.000
H3 -1.071 1.808 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.90421.1202
Br21.90422.3963
H31.12022.3963

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 101.651
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3A")

Jump to S1C1
Energy calculated at CID/3-21G*
 hartrees
Energy at 0K-2598.588329
Energy at 298.15K-2598.591047
HF Energy-2598.402132
Nuclear repulsion energy69.791042
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 CID/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' 3228 3004 6.79      
2 A' 974 907 1.94      
3 A' 736 685 23.66      

Unscaled Zero Point Vibrational Energy (zpe) 2469.5 cm-1
Scaled (by 0.9305) Zero Point Vibrational Energy (zpe) 2297.9 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 CID/3-21G*
ABC
25.11979 0.41078 0.40417

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.532 0.000
Br2 0.021 -0.325 0.000
H3 -0.856 2.171 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.85641.0853
Br21.85642.6450
H31.08532.6450

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