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

using model chemistry: MP2/6-31G*

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 MP2/6-31G*
 hartrees
Energy at 0K-2662.566681
Energy at 298.15K-2662.569145
HF Energy-2662.164233
Nuclear repulsion energy124.346241
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 MP2/6-31G*
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 2126 2005 1.98      
2 Σ 590 556 2.04      
3 Π 377 355 2.41      
3 Π 377 355 2.41      

Unscaled Zero Point Vibrational Energy (zpe) 1734.9 cm-1
Scaled (by 0.943) Zero Point Vibrational Energy (zpe) 1636.0 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 MP2/6-31G*
B
0.13537

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.173
N2 0.000 0.000 -2.346
Br3 0.000 0.000 0.670

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.17321.8429
N21.17323.0161
Br31.84293.0161

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