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

using model chemistry: QCISD(T)/TZVP

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 QCISD(T)/TZVP
 hartrees
Energy at 0K-2665.264628
Energy at 298.15K 
HF Energy-2664.718118
Nuclear repulsion energy124.102037
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 QCISD(T)/TZVP
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 2220 2139        
2 Σ 566 545        
3 Π 330 318        
3 Π 330 318        

Unscaled Zero Point Vibrational Energy (zpe) 1722.8 cm-1
Scaled (by 0.9632) Zero Point Vibrational Energy (zpe) 1659.4 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 QCISD(T)/TZVP
B
0.13500

See section I.F.4 to change rotational constant units
Geometric Data calculated at QCISD(T)/TZVP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.148
N2 0.000 0.000 -2.315
Br3 0.000 0.000 0.660

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.16691.8077
N21.16692.9746
Br31.80772.9746

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