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: QCISD(T)=FULL/daug-cc-pVTZ

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)=FULL/daug-cc-pVTZ
Rotational Constants (cm-1) from geometry optimized at QCISD(T)=FULL/daug-cc-pVTZ
See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)=FULL/daug-cc-pVTZ
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at QCISD(T)=FULL/daug-cc-pVTZ
 hartrees
Energy at 0K-2611.954143
Energy at 298.15K 
HF Energy-2611.459053
Nuclear repulsion energy81.251653
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)=FULL/daug-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 3231 3231        
2 A1 1387 1387        
3 A1 727 727        
4 B1 193 193        
5 B2 3322 3322        
6 B2 909 909        

Unscaled Zero Point Vibrational Energy (zpe) 4884.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4884.9 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)=FULL/daug-cc-pVTZ
ABC
9.38410 0.38324 0.36821

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.474
Br2 0.000 0.000 0.366
H3 0.000 0.944 -1.980
H4 0.000 -0.944 -1.980

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.83991.07131.0713
Br21.83992.52912.5291
H31.07132.52911.8881
H41.07132.52911.8881

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 118.207 Br2 C1 H4 118.207
H3 C1 H4 123.586
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability