return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: CCD/cc-pVTZ

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 CCD/cc-pVTZ
 hartrees
Energy at 0K-2611.851910
Energy at 298.15K-2611.855520
HF Energy-2611.458325
Nuclear repulsion energy80.992493
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 CCD/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 A' 3218 3004 5.12      
2 A' 1427 1332 20.55      
3 A' 730 682 15.43      
4 A' 126 118 64.27      
5 A" 3369 3146 0.75      
6 A" 948 885 0.87      

Unscaled Zero Point Vibrational Energy (zpe) 4908.9 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 4583.4 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 CCD/cc-pVTZ
ABC
9.31613 0.38081 0.36585

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVTZ

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 -1.479 0.000
Br2 0.000 0.367 0.000
H3 0.000 -1.985 0.947
H4 0.000 -1.985 -0.947

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84621.07411.0741
Br21.84622.53572.5357
H31.07412.53571.8950
H41.07412.53571.8950

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 118.097 Br2 C1 H4 118.097
H3 C1 H4 123.806
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at CCD/cc-pVTZ
 hartrees
Energy at 0K-2611.851910
Energy at 298.15K 
HF Energy-2611.458322
Nuclear repulsion energy80.997451
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 CCD/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 3218 3004 5.13      
2 A1 1427 1332 20.55      
3 A1 731 682 15.41      
4 B1 128 119 64.25      
5 B2 3369 3146 0.75      
6 B2 947 885 0.87      

Unscaled Zero Point Vibrational Energy (zpe) 4909.5 cm-1
Scaled (by 0.9337) Zero Point Vibrational Energy (zpe) 4584.0 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 CCD/cc-pVTZ
ABC
9.31841 0.38085 0.36590

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/cc-pVTZ

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.479
Br2 0.000 0.000 0.367
H3 0.000 0.947 -1.985
H4 0.000 -0.947 -1.985

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.84601.07411.0741
Br21.84602.53572.5357
H31.07412.53571.8947
H41.07412.53571.8947

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 118.111 Br2 C1 H4 118.111
H3 C1 H4 123.779
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability