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

using model chemistry: B3PW91/3-21G

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 B3PW91/3-21G
 hartrees
Energy at 0K-2654.050464
Energy at 298.15K 
HF Energy-2654.050464
Nuclear repulsion energy123.585246
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 B3PW91/3-21G
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 2301 2211 12.28      
2 Σ 587 564 0.54      
3 Π 476 458 0.63      
3 Π 476 458 0.63      

Unscaled Zero Point Vibrational Energy (zpe) 1919.4 cm-1
Scaled (by 0.9612) Zero Point Vibrational Energy (zpe) 1845.0 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 B3PW91/3-21G
B
0.13390

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3PW91/3-21G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.155
N2 0.000 0.000 -2.323
Br3 0.000 0.000 0.663

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.16741.8181
N21.16742.9855
Br31.81812.9855

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 B3PW91/3-21G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.035      
2 N -0.419      
3 Br 0.454      


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 2.892 2.892
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.529 0.000 0.000
y 0.000 -28.529 0.000
z 0.000 0.000 -34.035
Traceless
 xyz
x 2.753 0.000 0.000
y 0.000 2.753 0.000
z 0.000 0.000 -5.506
Polar
3z2-r2-11.011
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 1.460 0.000 0.000
y 0.000 1.460 0.000
z 0.000 0.000 6.234


<r2> (average value of r2) Å2
<r2> 80.115
(<r2>)1/2 8.951