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

using model chemistry: MP2=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 MP2=FULL/3-21G
 hartrees
Energy at 0K-2652.076050
Energy at 298.15K 
HF Energy-2651.812135
Nuclear repulsion energy121.460670
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=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 2063 1970 1.21      
2 Σ 552 527 0.37      
3 Π 427 408 0.78      
3 Π 427 408 0.78      

Unscaled Zero Point Vibrational Energy (zpe) 1734.4 cm-1
Scaled (by 0.9548) Zero Point Vibrational Energy (zpe) 1656.0 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=FULL/3-21G
B
0.12931

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2=FULL/3-21G

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 -2.365
Br3 0.000 0.000 0.674

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.19181.8474
N21.19183.0392
Br31.84743.0392

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