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

using model chemistry: MP2/CEP-121G

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 MP2/CEP-121G
 hartrees
Energy at 0K-28.453652
Energy at 298.15K 
HF Energy-28.198356
Nuclear repulsion energy22.590322
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 MP2/CEP-121G
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 1913 1867 1.69      
2 Σ 520 507 0.62      
3 Π 294 287 0.85      
3 Π 294 287 0.85      

Unscaled Zero Point Vibrational Energy (zpe) 1510.4 cm-1
Scaled (by 0.976) Zero Point Vibrational Energy (zpe) 1474.2 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 MP2/CEP-121G
B
0.12534

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/CEP-121G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.185
N2 0.000 0.000 -2.406
Br3 0.000 0.000 0.684

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.22071.8694
N21.22073.0900
Br31.86943.0900

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