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

using model chemistry: B2PLYP/6-31G*

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 B2PLYP/6-31G*
 hartrees
Energy at 0K-2663.955694
Energy at 298.15K 
HF Energy-2663.819390
Nuclear repulsion energy124.747804
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 B2PLYP/6-31G*
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 2235 2122 11.96      
2 Σ 585 555 1.65      
3 Π 392 372 2.29      
4 Π 392 372 2.29      

Unscaled Zero Point Vibrational Energy (zpe) 1801.6 cm-1
Scaled (by 0.9492) Zero Point Vibrational Energy (zpe) 1710.0 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 B2PLYP/6-31G*
B
0.13633

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.136
N2 0.000 0.000 -2.307
Br3 0.000 0.000 0.656

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.17121.7919
N21.17122.9631
Br31.79192.9631

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 B2PLYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.333      
2 N -0.393      
3 Br 0.059      


Electric dipole moments


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.641 0.000 0.000
y 0.000 2.641 0.000
z 0.000 0.000 6.957


<r2> (average value of r2) Å2
<r2> 79.113
(<r2>)1/2 8.895