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

using model chemistry: HF/STO-3G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at HF/STO-3G
 hartrees
Energy at 0K-7970.985512
Energy at 298.15K-7970.994888
HF Energy-7970.985512
Nuclear repulsion energy940.432640
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 HF/STO-3G
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 490 400 26.58      
2 A1 196 160 5.45      
3 E 544 444 51.43      
3 E 544 444 51.43      
4 E 137 112 1.14      
4 E 137 112 1.14      

Unscaled Zero Point Vibrational Energy (zpe) 1023.8 cm-1
Scaled (by 0.8165) Zero Point Vibrational Energy (zpe) 835.9 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 HF/STO-3G
ABC
0.03417 0.03417 0.01814

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/STO-3G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.896
Br2 0.000 1.981 -0.128
Br3 1.716 -0.991 -0.128
Br4 -1.716 -0.991 -0.128

Atom - Atom Distances (Å)
  P1 Br2 Br3 Br4
P12.23022.23022.2302
Br22.23023.43153.4315
Br32.23023.43153.4315
Br42.23023.43153.4315

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 100.588 Br2 P1 Br4 100.588
Br3 P1 Br4 100.588
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/STO-3G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.452      
2 Br -0.151      
3 Br -0.151      
4 Br -0.151      


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 1.435 1.435
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -64.752 0.000 0.000
y 0.000 -64.752 0.000
z 0.000 0.000 -60.676
Traceless
 xyz
x -2.038 0.000 0.000
y 0.000 -2.038 0.000
z 0.000 0.000 4.077
Polar
3z2-r28.153
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 6.484 0.000 0.000
y 0.000 6.484 0.000
z 0.000 0.000 1.862


<r2> (average value of r2) Å2
<r2> 465.500
(<r2>)1/2 21.575