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

using model chemistry: HF/SDD

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/SDD
 hartrees
Energy at 0K-93.681167
Energy at 298.15K-93.690556
HF Energy-93.681167
Nuclear repulsion energy64.525371
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/SDD
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 342 307 2.86      
2 A1 230 207 2.06      
3 E 749 674 15.18      
3 E 749 674 15.18      
4 E 167 150 0.00      
4 E 167 150 0.00      

Unscaled Zero Point Vibrational Energy (zpe) 1201.2 cm-1
Scaled (by 0.9004) Zero Point Vibrational Energy (zpe) 1081.5 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 HF/SDD
ABC
0.04089 0.04089 0.02062

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/SDD

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.479
Br2 0.000 1.858 -0.032
Br3 1.609 -0.929 -0.032
Br4 -1.609 -0.929 -0.032

Atom - Atom Distances (Å)
  N1 Br2 Br3 Br4
N11.92751.92751.9275
Br21.92753.21883.2188
Br31.92753.21883.2188
Br41.92753.21883.2188

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 113.229 Br2 N1 Br4 113.229
Br3 N1 Br4 113.229
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/SDD Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.851      
2 Br 0.284      
3 Br 0.284      
4 Br 0.284      


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 -1.407 1.407
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -47.101 0.000 0.000
y 0.000 -47.101 0.000
z 0.000 0.000 -53.176
Traceless
 xyz
x 3.037 0.000 0.000
y 0.000 3.037 0.000
z 0.000 0.000 -6.074
Polar
3z2-r2-12.149
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 10.079 0.000 0.000
y 0.000 10.079 0.000
z 0.000 0.000 2.190


<r2> (average value of r2) Å2
<r2> 104.839
(<r2>)1/2 10.239