return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

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

using model chemistry: B3LYP/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 B3LYP/CEP-31G
 hartrees
Energy at 0K-49.904781
Energy at 298.15K-49.913820
HF Energy-49.904781
Nuclear repulsion energy50.478175
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 B3LYP/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 439 425 0.22      
2 A1 192 186 0.78      
3 E 501 486 115.65      
3 E 501 486 115.65      
4 E 131 127 1.20      
4 E 131 127 1.20      

Unscaled Zero Point Vibrational Energy (zpe) 947.8 cm-1
Scaled (by 0.9684) Zero Point Vibrational Energy (zpe) 917.8 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 B3LYP/CEP-31G
ABC
0.03786 0.03786 0.01920

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-31G

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.649
Br2 0.000 1.926 -0.043
Br3 1.668 -0.963 -0.043
Br4 -1.668 -0.963 -0.043

Atom - Atom Distances (Å)
  N1 Br2 Br3 Br4
N12.04632.04632.0463
Br22.04633.33513.3351
Br32.04633.33513.3351
Br42.04633.33513.3351

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 109.160 Br2 N1 Br4 109.160
Br3 N1 Br4 109.160
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.506      
2 Br 0.169      
3 Br 0.169      
4 Br 0.169      


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 -1.042 1.042
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -48.045 0.000 0.000
y 0.000 -48.045 0.000
z 0.000 0.000 -52.259
Traceless
 xyz
x 2.107 0.000 0.000
y 0.000 2.107 0.000
z 0.000 0.000 -4.215
Polar
3z2-r2-8.429
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 11.802 0.000 0.000
y 0.000 11.803 -0.000
z 0.000 -0.000 2.594


<r2> (average value of r2) Å2
<r2> 110.892
(<r2>)1/2 10.531