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 PBr3 (Phosphorus tribromide)

using model chemistry: BLYP/6-31G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at BLYP/6-31G
 hartrees
Energy at 0K-8056.110281
Energy at 298.15K-8056.119008
HF Energy-8056.110281
Nuclear repulsion energy862.600457
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 BLYP/6-31G
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 318 315 10.98      
2 A1 124 123 0.32      
3 E 328 326 83.75      
3 E 328 326 83.76      
4 E 88 88 0.01      
4 E 88 88 0.01      

Unscaled Zero Point Vibrational Energy (zpe) 637.3 cm-1
Scaled (by 0.9924) Zero Point Vibrational Energy (zpe) 632.5 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 BLYP/6-31G
ABC
0.02861 0.02861 0.01504

See section I.F.4 to change rotational constant units
Geometric Data calculated at BLYP/6-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.897
Br2 0.000 2.176 -0.128
Br3 1.884 -1.088 -0.128
Br4 -1.884 -1.088 -0.128

Atom - Atom Distances (Å)
  P1 Br2 Br3 Br4
P12.40512.40512.4051
Br22.40513.76843.7684
Br32.40513.76843.7684
Br42.40513.76843.7684

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 103.146 Br2 P1 Br4 103.146
Br3 P1 Br4 103.146
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at BLYP/6-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.319      
2 Br -0.106      
3 Br -0.106      
4 Br -0.106      


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 1.071 1.071
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -70.126 0.000 0.000
y 0.000 -70.126 0.000
z 0.000 0.000 -67.744
Traceless
 xyz
x -1.191 0.000 0.000
y 0.000 -1.191 0.000
z 0.000 0.000 2.382
Polar
3z2-r24.763
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 13.857 0.000 0.000
y 0.000 13.857 0.000
z 0.000 0.000 5.532


<r2> (average value of r2) Å2
<r2> 554.117
(<r2>)1/2 23.540