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All results from a given calculation for CHBr (bromomethylene)

using model chemistry: MP2=FULL/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=FULL/3-21G
 hartrees
Energy at 0K-2598.257383
Energy at 298.15K-2598.260066
HF Energy-2598.143470
Nuclear repulsion energy66.495453
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=FULL/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' 2860 2730 106.07      
2 A' 1188 1134 11.96      
3 A' 601 574 89.16      

Unscaled Zero Point Vibrational Energy (zpe) 2324.1 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 2219.1 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 MP2=FULL/3-21G
ABC
15.21284 0.37736 0.36823

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.026 1.646 0.000
Br2 0.026 -0.335 0.000
H3 -1.076 1.848 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.98131.1205
Br21.98132.4458
H31.12052.4458

picture of bromomethylene state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 100.392
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

State 2 (3A")

Jump to S1C1
Energy calculated at MP2=FULL/3-21G
 hartrees
Energy at 0K-2598.274160
Energy at 298.15K-2598.276839
HF Energy-2598.181145
Nuclear repulsion energy67.926982
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=FULL/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' 3253 3106 5.96      
2 A' 928 886 2.25      
3 A' 667 637 24.44      

Unscaled Zero Point Vibrational Energy (zpe) 2424.5 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 2314.9 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=FULL/3-21G
ABC
25.15097 0.38819 0.38229

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.021 1.578 0.000
Br2 0.021 -0.334 0.000
H3 -0.855 2.216 0.000

Atom - Atom Distances (Å)
  C1 Br2 H3
C11.91181.0836
Br21.91182.6961
H31.08362.6961

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