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

using model chemistry: B2PLYP=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 B2PLYP=FULL/3-21G*
 hartrees
Energy at 0K-2653.783045
Energy at 298.15K 
HF Energy-2653.660698
Nuclear repulsion energy123.999080
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 B2PLYP=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 2188 2188 3.99 43.61 0.32 0.48
2 Σ 589 589 1.24 5.68 0.24 0.38
3 Π 408 408 0.71 2.00 0.75 0.86
3 Π 408 408 0.71 2.00 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1796.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 1796.9 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 B2PLYP=FULL/3-21G*
B
0.13471

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP=FULL/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.144
N2 0.000 0.000 -2.320
Br3 0.000 0.000 0.660

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.17671.8037
N21.17672.9804
Br31.80372.9804

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