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All results from a given calculation for CHBr2 (dibromomethyl radical)

using model chemistry: CCSD(T)/Def2TZVPP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at CCSD(T)/Def2TZVPP
 hartrees
Energy at 0K-5183.979906
Energy at 298.15K 
HF Energy-5183.241974
Nuclear repulsion energy338.411862
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)/Def2TZVPP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
A' 3237 3237        
A' 629 629        
A' 408 408        
A' 186 186        
A" 1194 1194        
A" 801 801        

Unscaled Zero Point Vibrational Energy (zpe) 3227.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3227.5 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)/Def2TZVPP
ABC
1.28311 0.04115 0.03990

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCSD(T)/Def2TZVPP

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.828 0.000
H2 -0.448 1.806 0.000
Br3 0.006 -0.097 1.611
Br4 0.006 -0.097 -1.611

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.07821.85771.8577
H21.07822.53432.5343
Br31.85772.53433.2217
Br41.85772.53433.2217

picture of dibromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 Br3 116.852 H2 C1 Br4 116.852
Br3 C1 Br4 120.253
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability