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

using model chemistry: mPW1PW91/6-31G(2df,p)

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at mPW1PW91/6-31G(2df,p)
 hartrees
Energy at 0K-7770.732741
Energy at 298.15K-7770.742145
HF Energy-7770.732741
Nuclear repulsion energy840.888265
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 mPW1PW91/6-31G(2df,p)
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 454 433 1.27      
2 A1 236 226 0.30      
3 E 635 606 33.66      
3 E 635 606 33.65      
4 E 164 156 0.19      
4 E 164 156 0.19      

Unscaled Zero Point Vibrational Energy (zpe) 1143.7 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 1091.9 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 mPW1PW91/6-31G(2df,p)
ABC
0.04480 0.04480 0.02273

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.603
Br2 0.000 1.770 -0.040
Br3 1.533 -0.885 -0.040
Br4 -1.533 -0.885 -0.040

Atom - Atom Distances (Å)
  N1 Br2 Br3 Br4
N11.88331.88331.8833
Br21.88333.06563.0656
Br31.88333.06563.0656
Br41.88333.06563.0656

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 108.957 Br2 N1 Br4 108.957
Br3 N1 Br4 108.957
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at mPW1PW91/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 N -0.682      
2 Br 0.227      
3 Br 0.227      
4 Br 0.227      


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 -0.542 0.542
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -56.315 0.000 0.000
y 0.000 -56.315 0.000
z 0.000 0.000 -60.499
Traceless
 xyz
x 2.092 0.000 0.000
y 0.000 2.092 0.000
z 0.000 0.000 -4.184
Polar
3z2-r2-8.368
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 11.920 0.000 0.000
y 0.000 11.919 -0.000
z 0.000 -0.000 6.985


<r2> (average value of r2) Å2
<r2> 367.694
(<r2>)1/2 19.175