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All results from a given calculation for NBr3 (Nitrogen Tribromide)

using model chemistry: HF/CEP-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 HF/CEP-31G
 hartrees
Energy at 0K-48.912348
Energy at 298.15K-48.921723
HF Energy-48.912348
Nuclear repulsion energy52.785400
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/CEP-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 344 310 3.31      
2 A1 229 206 1.71      
3 E 737 665 13.57      
3 E 737 665 13.57      
4 E 164 148 0.02      
4 E 164 148 0.02      

Unscaled Zero Point Vibrational Energy (zpe) 1187.8 cm-1
Scaled (by 0.9014) Zero Point Vibrational Energy (zpe) 1070.7 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 HF/CEP-31G
ABC
0.04055 0.04055 0.02044

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.478
Br2 0.000 1.866 -0.032
Br3 1.616 -0.933 -0.032
Br4 -1.616 -0.933 -0.032

Atom - Atom Distances (Å)
  N1 Br2 Br3 Br4
N11.93471.93471.9347
Br21.93473.23233.2323
Br31.93473.23233.2323
Br41.93473.23233.2323

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 113.306 Br2 N1 Br4 113.306
Br3 N1 Br4 113.306
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.806      
2 Br 0.269      
3 Br 0.269      
4 Br 0.269      


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 -1.443 1.443
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -47.139 0.000 0.000
y 0.000 -47.139 0.000
z 0.000 0.000 -53.119
Traceless
 xyz
x 2.990 0.000 0.000
y 0.000 2.990 0.000
z 0.000 0.000 -5.981
Polar
3z2-r2-11.962
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 10.098 0.000 0.000
y 0.000 10.098 0.000
z 0.000 0.000 1.903


<r2> (average value of r2) Å2
<r2> 104.989
(<r2>)1/2 10.246