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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-2652.386100
Energy at 298.15K 
HF Energy-2652.026830
Nuclear repulsion energy123.103940
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 2040 1934 0.10      
2 Σ 583 553 1.93      
3 Π 379 359 1.01      
3 Π 379 359 1.01      

Unscaled Zero Point Vibrational Energy (zpe) 1690.4 cm-1
Scaled (by 0.948) Zero Point Vibrational Energy (zpe) 1602.5 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
0.13271

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 -1.147
N2 0.000 0.000 -2.341
Br3 0.000 0.000 0.665

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.19381.8115
N21.19383.0053
Br31.81153.0053

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