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

using model chemistry: QCISD(T)/aug-cc-pVTZ

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 QCISD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-2611.883423
Energy at 298.15K 
HF Energy-2611.458965
Nuclear repulsion energy80.867079
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)/aug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)/aug-cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 -0.000 1.482 0.000
Br2 -0.000 -0.367 0.000
H3 0.008 1.985 0.952
H4 0.008 1.985 -0.952

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84911.07691.0769
Br21.84912.53822.5382
H31.07692.53821.9036
H41.07692.53821.9036

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 117.895 Br2 C1 H4 117.895
H3 C1 H4 124.203
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at QCISD(T)/aug-cc-pVTZ
 hartrees
Energy at 0K-2611.883422
Energy at 298.15K 
HF Energy-2611.458983
Nuclear repulsion energy80.828467
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)/aug-cc-pVTZ
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 3182 3076        
2 A1 1387 1341        
3 A1 714 691        
4 B1 116i 112i        
5 B2 3331 3221        
6 B2 922 891        

Unscaled Zero Point Vibrational Energy (zpe) 4710.3 cm-1
Scaled (by 0.9668) Zero Point Vibrational Energy (zpe) 4553.9 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 QCISD(T)/aug-cc-pVTZ
ABC
9.23275 0.37941 0.36443

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/aug-cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.483
Br2 0.000 0.000 0.368
H3 0.000 0.952 -1.986
H4 0.000 -0.952 -1.986

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.85021.07671.0767
Br21.85022.53882.5388
H31.07672.53881.9035
H41.07672.53881.9035

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 124.242
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability