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

using model chemistry: MP2/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 MP2/SDD
 hartrees
Energy at 0K-93.913529
Energy at 298.15K-93.922464
HF Energy-93.662048
Nuclear repulsion energy60.601830
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 MP2/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 364 352 2.67      
2 A1 188 181 1.56      
3 E 485 468 25.03      
3 E 485 468 25.03      
4 E 131 127 0.99      
4 E 131 127 0.99      

Unscaled Zero Point Vibrational Energy (zpe) 892.5 cm-1
Scaled (by 0.9653) Zero Point Vibrational Energy (zpe) 861.6 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 MP2/SDD
ABC
0.03769 0.03769 0.01921

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/SDD

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.756
Br2 0.000 1.925 -0.050
Br3 1.667 -0.962 -0.050
Br4 -1.667 -0.962 -0.050

Atom - Atom Distances (Å)
  N1 Br2 Br3 Br4
N12.08712.08712.0871
Br22.08713.33423.3342
Br32.08713.33423.3342
Br42.08713.33423.3342

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 106.022 Br2 N1 Br4 106.022
Br3 N1 Br4 106.022
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability