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

using model chemistry: PBE1PBE/6-31G(2df,p)

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 PBE1PBE/6-31G(2df,p)
 hartrees
Energy at 0K-2664.258383
Energy at 298.15K 
HF Energy-2664.258383
Nuclear repulsion energy126.795050
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 PBE1PBE/6-31G(2df,p)
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 2347 2246 27.76 71.29 0.31 0.47
2 Σ 641 613 1.08 5.69 0.12 0.22
3 Π 401 383 2.20 1.38 0.75 0.86
3 Π 401 383 2.20 1.38 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1894.2 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 1812.8 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 PBE1PBE/6-31G(2df,p)
B
0.14080

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.114
N2 0.000 0.000 -2.272
Br3 0.000 0.000 0.645

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.15721.7599
N21.15722.9171
Br31.75992.9171

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 PBE1PBE/6-31G(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.053      
2 N -0.293      
3 Br 0.239      


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 3.101 3.101
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.252 0.000 0.000
y 0.000 -28.252 0.000
z 0.000 0.000 -33.772
Traceless
 xyz
x 2.760 0.000 0.000
y 0.000 2.760 0.000
z 0.000 0.000 -5.520
Polar
3z2-r2-11.040
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 3.429 0.000 0.000
y 0.000 3.429 0.000
z 0.000 0.000 7.268


<r2> (average value of r2) Å2
<r2> 76.951
(<r2>)1/2 8.772