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

using model chemistry: CISD/6-311+G(3df,2p)

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/6-311+G(3df,2p)
 hartrees
Energy at 0K-2665.140873
Energy at 298.15K 
HF Energy-2664.688685
Nuclear repulsion energy125.900817
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/6-311+G(3df,2p)
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 2397 2210 18.87      
2 Σ 620 571 0.11      
3 Π 384 354 3.10      
3 Π 384 354 3.10      

Unscaled Zero Point Vibrational Energy (zpe) 1892.4 cm-1
Scaled (by 0.9218) Zero Point Vibrational Energy (zpe) 1744.4 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 CISD/6-311+G(3df,2p)
B
0.13897

See section I.F.4 to change rotational constant units
Geometric Data calculated at CISD/6-311+G(3df,2p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.135
N2 0.000 0.000 -2.280
Br3 0.000 0.000 0.651

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.14461.7856
N21.14462.9302
Br31.78562.9302

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
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