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)/daug-cc-pVDZ

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

Conformer 2 (C2V)

Jump to S1C1
Energy calculated at QCISD(T)/daug-cc-pVDZ
 hartrees
Energy at 0K-2611.676524
Energy at 298.15K 
HF Energy-2611.373251
Nuclear repulsion energy79.992903
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)/daug-cc-pVDZ
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 3167 3167        
2 A1 1391 1391        
3 A1 701 701        
4 B1 111i 111i        
5 B2 3324 3324        
6 B2 920 920        

Unscaled Zero Point Vibrational Energy (zpe) 4696.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 4696.1 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)/daug-cc-pVDZ
ABC
8.98895 0.37181 0.35704

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

Point Group is C2v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.498
Br2 0.000 0.000 0.371
H3 0.000 0.965 -2.006
H4 0.000 -0.965 -2.006

Atom - Atom Distances (Å)
  C1 Br2 H3 H4
C11.86911.09011.0901
Br21.86912.56532.5653
H31.09012.56531.9292
H41.09012.56531.9292

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 117.771 Br2 C1 H4 117.771
H3 C1 H4 124.459
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability