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

using model chemistry: MP3=FULL/3-21G*

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 MP3=FULL/3-21G*
 hartrees
Energy at 0K-2652.376156
Energy at 298.15K 
HF Energy-2652.032262
Nuclear repulsion energy123.957650
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 MP3=FULL/3-21G*
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 2358 2358 5.60      
2 Σ 596 596 0.21      
3 Π 391 391 1.35      
3 Π 391 391 1.35      

Unscaled Zero Point Vibrational Energy (zpe) 1867.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1867.8 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 MP3=FULL/3-21G*
B
0.13470

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP3=FULL/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.152
N2 0.000 0.000 -2.316
Br3 0.000 0.000 0.661

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.16441.8124
N21.16442.9767
Br31.81242.9767

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