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 CBr3 (tribromomethyl radical)

using model chemistry: B2PLYP/cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 2A1
Energy calculated at B2PLYP/cc-pVTZ
 hartrees
Energy at 0K-7759.430774
Energy at 298.15K 
HF Energy-7759.162328
Nuclear repulsion energy784.424542
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 B2PLYP/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 324 311 0.90 16.28 0.03 0.07
2 A1 242 233 0.74 1.16 0.42 0.59
3 E 776 744 135.76 0.61 0.75 0.86
3 E 776 744 135.76 0.61 0.75 0.86
4 E 160 154 0.00 2.82 0.75 0.86
4 E 160 154 0.00 2.82 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1219.2 cm-1
Scaled (by 0.9594) Zero Point Vibrational Energy (zpe) 1169.7 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 B2PLYP/cc-pVTZ
ABC
0.04147 0.04147 0.02079

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 0.292
Br2 0.000 1.851 -0.017
Br3 1.603 -0.925 -0.017
Br4 -1.603 -0.925 -0.017

Atom - Atom Distances (Å)
  C1 Br2 Br3 Br4
C11.87621.87621.8762
Br21.87623.20533.2053
Br31.87623.20533.2053
Br41.87623.20533.2053

picture of tribromomethyl radical state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 C1 Br3 117.345 Br2 C1 Br4 117.345
Br3 C1 Br4 117.345
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B2PLYP/cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.152      
2 Br 0.051      
3 Br 0.051      
4 Br 0.051      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 -0.224 0.224
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -58.234 0.000 0.000
y 0.000 -58.234 0.000
z 0.000 0.000 -61.135
Traceless
 xyz
x 1.450 0.000 0.000
y 0.000 1.450 0.000
z 0.000 0.000 -2.901
Polar
3z2-r2-5.802
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 11.828 0.000 0.000
y 0.000 11.828 0.000
z 0.000 0.000 6.005


<r2> (average value of r2) Å2
<r2> 397.095
(<r2>)1/2 19.927