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

using model chemistry: CCSD(T)=FULL/TZVP

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 CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-2611.860536
Energy at 298.15K-2611.864324
HF Energy-2611.405918
Nuclear repulsion energy80.206816
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 CCSD(T)=FULL/TZVP
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' 3198 3058        
2 A' 1422 1359        
3 A' 692 662        
4 A' 256 245        
5 A" 3353 3206        
6 A" 947 906        

Unscaled Zero Point Vibrational Energy (zpe) 4934.4 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 4717.3 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 CCSD(T)=FULL/TZVP
ABC
9.16439 0.37304 0.35878

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.005 1.497 0.000
Br2 0.005 -0.370 0.000
H3 -0.111 1.992 0.950
H4 -0.111 1.992 -0.950

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86781.07701.0770
Br21.86782.54862.5486
H31.07702.54861.8994
H41.07702.54861.8994

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 117.327 Br2 C1 H4 117.327
H3 C1 H4 123.718
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CCSD(T)=FULL/TZVP
 hartrees
Energy at 0K-2611.860507
Energy at 298.15K 
HF Energy-2611.405811
Nuclear repulsion energy80.247169
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 CCSD(T)=FULL/TZVP
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 3203 3062        
2 A1 1423 1360        
3 A1 694 663        
4 B1 198i 189i        
5 B2 3360 3212        
6 B2 943 902        

Unscaled Zero Point Vibrational Energy (zpe) 4711.8 cm-1
Scaled (by 0.956) Zero Point Vibrational Energy (zpe) 4504.5 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 CCSD(T)=FULL/TZVP
ABC
9.22263 0.37345 0.35891

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)=FULL/TZVP

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 0.370
H3 0.000 0.952 -1.997
H4 0.000 -0.952 -1.997

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86591.07651.0765
Br21.86592.55222.5522
H31.07652.55221.9046
H41.07652.55221.9046

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 117.794 Br2 C1 H4 117.794
H3 C1 H4 124.412
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability