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

using model chemistry: CISD/6-311G*

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 CISD/6-311G*
 hartrees
Energy at 0K-2665.054411
Energy at 298.15K 
HF Energy-2664.670675
Nuclear repulsion energy125.269486
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 CISD/6-311G*
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 2384 2206 12.16      
2 Σ 610 565 0.11      
3 Π 370 342 2.99      
3 Π 370 342 2.99      

Unscaled Zero Point Vibrational Energy (zpe) 1867.0 cm-1
Scaled (by 0.9253) Zero Point Vibrational Energy (zpe) 1727.5 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 CISD/6-311G*
B
0.13757

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.140
N2 0.000 0.000 -2.291
Br3 0.000 0.000 0.654

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.15101.7942
N21.15102.9451
Br31.79422.9451

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