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All results from a given calculation for PBr3 (Phosphorus tribromide)

using model chemistry: PBE1PBE/3-21G*

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at PBE1PBE/3-21G*
 hartrees
Energy at 0K-8024.801156
Energy at 298.15K-8024.810352
HF Energy-8024.801156
Nuclear repulsion energy949.730098
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 PBE1PBE/3-21G*
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 421 404 15.30      
2 A1 165 159 0.28      
3 E 436 419 99.40      
3 E 436 419 99.39      
4 E 110 106 0.05      
4 E 110 106 0.05      

Unscaled Zero Point Vibrational Energy (zpe) 839.0 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 805.3 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 PBE1PBE/3-21G*
ABC
0.03480 0.03480 0.01841

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.864
Br2 0.000 1.967 -0.123
Br3 1.703 -0.983 -0.123
Br4 -1.703 -0.983 -0.123

Atom - Atom Distances (Å)
  P1 Br2 Br3 Br4
P12.20032.20032.2003
Br22.20033.40613.4061
Br32.20033.40613.4061
Br42.20033.40613.4061

picture of Phosphorus tribromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 P1 Br3 101.429 Br2 P1 Br4 101.429
Br3 P1 Br4 101.429
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.492      
2 Br -0.164      
3 Br -0.164      
4 Br -0.164      


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 0.139 0.139
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -65.655 0.000 0.000
y 0.000 -65.655 0.000
z 0.000 0.000 -66.843
Traceless
 xyz
x 0.594 0.000 0.000
y 0.000 0.594 0.000
z 0.000 0.000 -1.188
Polar
3z2-r2-2.377
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 11.595 0.000 0.000
y 0.000 11.595 0.000
z 0.000 0.000 6.795


<r2> (average value of r2) Å2
<r2> 460.104
(<r2>)1/2 21.450