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 BrCN (Cyanogen bromide)

using model chemistry: B3LYP/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes C*V 1Σ
Energy calculated at B3LYP/6-31+G**
 hartrees
Energy at 0K-2664.540925
Energy at 298.15K 
HF Energy-2664.540925
Nuclear repulsion energy125.370346
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/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 Σ 2302 2219 34.03      
2 Σ 586 565 1.65      
3 Π 404 390 1.49      
3 Π 404 390 1.49      

Unscaled Zero Point Vibrational Energy (zpe) 1847.8 cm-1
Scaled (by 0.9642) Zero Point Vibrational Energy (zpe) 1781.6 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 B3LYP/6-31+G**
B
0.13771

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.131
N2 0.000 0.000 -2.295
Br3 0.000 0.000 0.653

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.16371.7841
N21.16372.9477
Br31.78412.9477

picture of Cyanogen bromide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
N2 C1 Br3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at B3LYP/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.251      
2 N -0.327      
3 Br 0.077      


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 3.302 3.302
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -29.044 0.000 0.000
y 0.000 -29.044 0.000
z 0.000 0.000 -34.964
Traceless
 xyz
x 2.960 0.000 0.000
y 0.000 2.960 0.000
z 0.000 0.000 -5.920
Polar
3z2-r2-11.839
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 3.196 0.000 0.000
y 0.000 3.196 0.000
z 0.000 0.000 7.977


<r2> (average value of r2) Å2
<r2> 78.834
(<r2>)1/2 8.879