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

using model chemistry: CCD/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 CCD/3-21G
 hartrees
Energy at 0K-2652.067746
Energy at 298.15K 
HF Energy-2651.815994
Nuclear repulsion energy121.885087
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 CCD/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 2267 2204 0.00      
2 Σ 556 541 0.01      
3 Π 439 427 1.16      
3 Π 439 427 1.16      

Unscaled Zero Point Vibrational Energy (zpe) 1850.6 cm-1
Scaled (by 0.9723) Zero Point Vibrational Energy (zpe) 1799.4 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 CCD/3-21G
B
0.13029

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.179
N2 0.000 0.000 -2.351
Br3 0.000 0.000 0.672

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.17221.8509
N21.17223.0231
Br31.85093.0231

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