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

using model chemistry: QCISD/TZVP

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C3V 1A1
Energy calculated at QCISD/TZVP
 hartrees
Energy at 0K-7772.433348
Energy at 298.15K-7772.442654
HF Energy-7771.561155
Nuclear repulsion energy818.319596
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 QCISD/TZVP
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 445 425 0.79      
2 A1 215 205 0.44      
3 E 607 580 27.42      
3 E 607 580 27.43      
4 E 152 146 0.23      
4 E 152 146 0.23      

Unscaled Zero Point Vibrational Energy (zpe) 1089.7 cm-1
Scaled (by 0.9553) Zero Point Vibrational Energy (zpe) 1041.0 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 QCISD/TZVP
ABC
0.04243 0.04243 0.02153

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

Point Group is C3v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
N1 0.000 0.000 0.623
Br2 0.000 1.818 -0.042
Br3 1.575 -0.909 -0.042
Br4 -1.575 -0.909 -0.042

Atom - Atom Distances (Å)
  N1 Br2 Br3 Br4
N11.93621.93621.9362
Br21.93623.14963.1496
Br31.93623.14963.1496
Br41.93623.14963.1496

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 108.848 Br2 N1 Br4 108.848
Br3 N1 Br4 108.848
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability