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

using model chemistry: QCISD(T)/6-311G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 2 yes C2V 2A1

Conformer 1 (CS)

Jump to S1C2
Vibrational Frequencies calculated at QCISD(T)/6-311G*
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/6-311G*
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-311G*
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at QCISD(T)/6-311G*
 hartrees
Energy at 0K-2611.629603
Energy at 298.15K 
HF Energy-2611.356123
Nuclear repulsion energy80.202094
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 QCISD(T)/6-311G*
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 3160 3043        
2 A1 1414 1361        
3 A1 703 677        
4 B1 174i 168i        
5 B2 3313 3190        
6 B2 948 913        

Unscaled Zero Point Vibrational Energy (zpe) 4681.7 cm-1
Scaled (by 0.9628) Zero Point Vibrational Energy (zpe) 4507.5 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 QCISD(T)/6-311G*
ABC
9.14650 0.37334 0.35870

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/6-311G*

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.495
Br2 0.000 0.000 0.371
H3 0.000 0.956 -2.002
H4 0.000 -0.956 -2.002

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86521.08261.0826
Br21.86522.55822.5582
H31.08262.55821.9125
H41.08262.55821.9125

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 117.960 Br2 C1 H4 117.960
H3 C1 H4 124.080
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability