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All results from a given calculation for NBr3 (Nitrogen 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-7777.826980
Energy at 298.15K-7777.836326
HF Energy-7777.826980
Nuclear repulsion energy829.347140
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 462 443 1.39      
2 A1 225 215 0.32      
3 E 610 584 41.96      
3 E 610 584 41.94      
4 E 154 148 0.33      
4 E 154 148 0.33      

Unscaled Zero Point Vibrational Energy (zpe) 1107.0 cm-1
Scaled (by 0.9581) Zero Point Vibrational Energy (zpe) 1060.6 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
0.04358 0.04358 0.02212

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)
N1 0.000 0.000 0.616
Br2 0.000 1.794 -0.041
Br3 1.554 -0.897 -0.041
Br4 -1.554 -0.897 -0.041

Atom - Atom Distances (Å)
  N1 Br2 Br3 Br4
N11.91081.91081.9108
Br21.91083.10763.1076
Br31.91083.10763.1076
Br41.91083.10763.1076

picture of Nitrogen Tribromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
Br2 N1 Br3 108.817 Br2 N1 Br4 108.817
Br3 N1 Br4 108.817
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 N -0.666      
2 Br 0.222      
3 Br 0.222      
4 Br 0.222      


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 -0.503 0.503
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -57.153 0.000 0.000
y 0.000 -57.153 0.000
z 0.000 0.000 -61.373
Traceless
 xyz
x 2.110 0.000 0.000
y 0.000 2.110 0.000
z 0.000 0.000 -4.220
Polar
3z2-r2-8.439
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 13.600 0.000 0.000
y 0.000 13.600 -0.000
z 0.000 -0.000 8.344


<r2> (average value of r2) Å2
<r2> 377.416
(<r2>)1/2 19.427