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All results from a given calculation for CH2Br (bromomethyl radical)

using model chemistry: MP3=FULL/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
1 2 no C2V 2A1

Conformer 1 (CS)

Jump to S1C2
Energy calculated at MP3=FULL/6-31+G**
 hartrees
Energy at 0K-2609.171589
Energy at 298.15K-2609.175460
HF Energy-2608.885862
Nuclear repulsion energy80.437483
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 MP3=FULL/6-31+G**
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' 3290 3065 5.21      
2 A' 1462 1362 27.22      
3 A' 706 658 18.90      
4 A' 316 294 71.14      
5 A" 3446 3210 0.42      
6 A" 978 911 1.28      

Unscaled Zero Point Vibrational Energy (zpe) 5098.4 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 4749.7 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 MP3=FULL/6-31+G**
ABC
9.22546 0.37509 0.36088

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.008 1.496 0.000
Br2 -0.008 -0.370 0.000
H3 0.157 1.981 0.944
H4 0.157 1.981 -0.944

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86571.07441.0744
Br21.86572.53882.5388
H31.07442.53881.8889
H41.07442.53881.8889

picture of bromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 116.836 Br2 C1 H4 116.836
H3 C1 H4 123.042
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at MP3=FULL/6-31+G**
 hartrees
Energy at 0K-2609.171539
Energy at 298.15K 
HF Energy-2608.885730
Nuclear repulsion energy80.502382
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 MP3=FULL/6-31+G**
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 3298 3072 4.16      
2 A1 1462 1362 28.46      
3 A1 709 660 17.52      
4 B1 228i 212i 84.40      
5 B2 3457 3221 0.84      
6 B2 972 905 1.46      

Unscaled Zero Point Vibrational Energy (zpe) 4834.6 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 4503.9 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 MP3=FULL/6-31+G**
ABC
9.30735 0.37573 0.36115

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/6-31+G**

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.491
Br2 0.000 0.000 0.369
H3 0.000 0.948 -1.992
H4 0.000 -0.948 -1.992

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86001.07241.0724
Br21.86002.54462.5446
H31.07242.54461.8959
H41.07242.54461.8959

picture of bromomethyl radical state 1 conformation 2
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 H3 117.879 Br2 C1 H4 117.879
H3 C1 H4 124.243
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability