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

using model chemistry: mPW1PW91/aug-cc-pVTZ

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/aug-cc-pVTZ
 hartrees
Energy at 0K-8064.633163
Energy at 298.15K-8064.642277
HF Energy-8064.633163
Nuclear repulsion energy936.338704
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 mPW1PW91/aug-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 396 379 10.29      
2 A1 160 153 0.04      
3 E 401 384 99.83      
3 E 401 384 99.84      
4 E 110 106 0.00      
4 E 110 106 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 788.8 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 755.7 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 mPW1PW91/aug-cc-pVTZ
ABC
0.03382 0.03382 0.01790

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/aug-cc-pVTZ

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
P1 0.000 0.000 0.876
Br2 0.000 1.995 -0.125
Br3 1.727 -0.997 -0.125
Br4 -1.727 -0.997 -0.125

Atom - Atom Distances (Å)
  P1 Br2 Br3 Br4
P12.23202.23202.2320
Br22.23203.45473.4547
Br32.23203.45473.4547
Br42.23203.45473.4547

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 101.413 Br2 P1 Br4 101.413
Br3 P1 Br4 101.413
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/aug-cc-pVTZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 P 0.237      
2 Br -0.079      
3 Br -0.079      
4 Br -0.079      


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 0.395 0.395
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -66.929 0.000 0.000
y 0.000 -66.929 0.000
z 0.000 0.000 -67.033
Traceless
 xyz
x 0.052 0.000 0.000
y 0.000 0.052 0.000
z 0.000 0.000 -0.103
Polar
3z2-r2-0.207
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 15.724 0.000 0.000
y 0.000 15.724 -0.000
z 0.000 -0.000 10.676


<r2> (average value of r2) Å2
<r2> 472.717
(<r2>)1/2 21.742