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

using model chemistry: CID/3-21G

19 10 17 12 22

States and conformations

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

Conformer 1 (CS)

Jump to S1C2
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-2598.937259
Energy at 298.15K-2598.940666
HF Energy-2598.814599
Nuclear repulsion energy77.872266
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' 3223 3002 4.25      
2 A' 1440 1341 36.15      
3 A' 651 607 14.98      
4 A' 41 38 104.97      
5 A" 3379 3148 0.55      
6 A" 913 850 1.49      

Unscaled Zero Point Vibrational Energy (zpe) 4823.0 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 4493.1 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 CID/3-21G
ABC
9.18373 0.34962 0.33680

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 -0.001 1.549 0.000
Br2 -0.001 -0.383 0.000
H3 0.018 2.051 0.954
H4 0.018 2.051 -0.954

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.93141.07851.0785
Br21.93142.61422.6142
H31.07852.61421.9083
H41.07852.61421.9083

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 117.764 Br2 C1 H4 117.764
H3 C1 H4 124.429
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CID/3-21G
 hartrees
Energy at 0K-2598.937259
Energy at 298.15K 
HF Energy-2598.814598
Nuclear repulsion energy77.873735
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 A1 3223 3003 4.24      
2 A1 1440 1341 36.20      
3 A1 651 607 14.96      
4 B1 34i 32i 105.35      
5 B2 3379 3148 0.54      
6 B2 912 850 1.49      

Unscaled Zero Point Vibrational Energy (zpe) 4785.7 cm-1
Scaled (by 0.9316) Zero Point Vibrational Energy (zpe) 4458.4 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
9.18472 0.34963 0.33681

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.549
Br2 0.000 0.000 0.383
H3 0.000 0.954 -2.051
H4 0.000 -0.954 -2.051

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.93131.07851.0785
Br21.93132.61422.6142
H31.07852.61421.9085
H41.07852.61421.9085

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 117.772 Br2 C1 H4 117.772
H3 C1 H4 124.456
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability