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

using model chemistry: LSDA/3-21G

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at LSDA/3-21G
 hartrees
Energy at 0K-7731.734509
Energy at 298.15K 
HF Energy-7731.734509
Nuclear repulsion energy826.089395
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 LSDA/3-21G
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 500 492 0.00      
2 A1 205 201 0.49      
3 E 571 562 101.83      
3 E 571 562 101.86      
4 E 141 139 0.65      
4 E 141 139 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 1064.4 cm-1
Scaled (by 0.9836) Zero Point Vibrational Energy (zpe) 1046.9 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 LSDA/3-21G
ABC
0.04341 0.04341 0.02212

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/3-21G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.698
Br2 0.000 1.794 -0.047
Br3 1.554 -0.897 -0.047
Br4 -1.554 -0.897 -0.047

Atom - Atom Distances (Å)
  N1 Br2 Br3 Br4
N11.94241.94241.9424
Br21.94243.10743.1074
Br31.94243.10743.1074
Br41.94243.10743.1074

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 106.240 Br2 N1 Br4 106.240
Br3 N1 Br4 106.240
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at LSDA/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.263      
2 Br 0.088      
3 Br 0.088      
4 Br 0.088      


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 -0.807 0.807
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -55.712 0.000 0.000
y 0.000 -55.712 0.000
z 0.000 0.000 -59.940
Traceless
 xyz
x 2.114 0.000 0.000
y 0.000 2.114 0.000
z 0.000 0.000 -4.228
Polar
3z2-r2-8.456
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 10.547 0.000 0.000
y 0.000 10.547 0.000
z 0.000 0.000 4.678


<r2> (average value of r2) Å2
<r2> 377.262
(<r2>)1/2 19.423