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

using model chemistry: CCD/cc-pVTZ-PP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 2A'
Energy calculated at CCD/cc-pVTZ-PP
 hartrees
Energy at 0K-870.034228
Energy at 298.15K 
HF Energy-869.424499
Nuclear repulsion energy202.236959
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-PP
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
A' 3261 3261 0.76      
A' 639 639 6.50      
A' 438 438 22.17      
A' 189 189 0.10      
A" 1211 1211 65.58      
A" 817 817 91.60      

Unscaled Zero Point Vibrational Energy (zpe) 3277.4 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3277.4 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-PP
ABC
1.28623 0.04148 0.04022

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

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.006 0.828 0.000
H2 -0.457 1.800 0.000
Br3 0.006 -0.097 1.604
Br4 0.006 -0.097 -1.604

Atom - Atom Distances (Å)
  C1 H2 Br3 Br4
C11.07671.85161.8516
H21.07672.52692.5269
Br31.85162.52693.2086
Br41.85162.52693.2086

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 116.793 H2 C1 Br4 116.793
Br3 C1 Br4 120.093
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability