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All results from a given calculation for BrCN (Cyanogen bromide)

using model chemistry: B3LYP/CEP-121G

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/CEP-121G
 hartrees
Energy at 0K-28.846467
Energy at 298.15K 
HF Energy-28.846467
Nuclear repulsion energy23.033146
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-121G
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 2174 2118 15.56      
2 Σ 539 525 0.41      
3 Π 344 336 0.65      
3 Π 344 336 0.65      

Unscaled Zero Point Vibrational Energy (zpe) 1700.5 cm-1
Scaled (by 0.9745) Zero Point Vibrational Energy (zpe) 1657.1 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-121G
B
0.12945

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/CEP-121G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.176
N2 0.000 0.000 -2.362
Br3 0.000 0.000 0.674

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.18611.8499
N21.18613.0360
Br31.84993.0360

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/CEP-121G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.486      
2 N 0.199      
3 Br 0.287      


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 3.045 3.045
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -25.626 0.000 0.000
y 0.000 -25.626 0.000
z 0.000 0.000 -31.747
Traceless
 xyz
x 3.061 0.000 0.000
y 0.000 3.061 0.000
z 0.000 0.000 -6.122
Polar
3z2-r2-12.243
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 1.647 0.000 0.000
y 0.000 1.647 0.000
z 0.000 0.000 7.457


<r2> (average value of r2) Å2
<r2> 53.886
(<r2>)1/2 7.341