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

using model chemistry: PBE1PBE/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 PBE1PBE/3-21G*
 hartrees
Energy at 0K-2653.909726
Energy at 298.15K 
HF Energy-2653.909726
Nuclear repulsion energy125.105065
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 PBE1PBE/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 2305 2212 16.22 50.08 0.32 0.49
2 Σ 614 589 1.11 4.65 0.22 0.36
3 Π 432 414 0.63 2.10 0.75 0.86
3 Π 432 414 0.63 2.10 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 1891.0 cm-1
Scaled (by 0.9598) Zero Point Vibrational Energy (zpe) 1815.0 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 PBE1PBE/3-21G*
B
0.13712

See section I.F.4 to change rotational constant units
Geometric Data calculated at PBE1PBE/3-21G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.133
N2 0.000 0.000 -2.300
Br3 0.000 0.000 0.654

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.16711.7873
N21.16712.9543
Br31.78732.9543

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
Charges from optimized geometry at PBE1PBE/3-21G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.281      
2 N -0.436      
3 Br 0.155      


Electric dipole moments
Electric dipole components in Debye
(What's a Debye? See section VII.A.3)
  x y z Total
  0.000 0.000 3.031 3.031
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.408 0.000 0.000
y 0.000 -28.408 0.000
z 0.000 0.000 -33.596
Traceless
 xyz
x 2.594 0.000 0.000
y 0.000 2.594 0.000
z 0.000 0.000 -5.188
Polar
3z2-r2-10.375
x2-y20.000
xy0.000
xz0.000
yz0.000


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 2.225 0.000 0.000
y 0.000 2.225 0.000
z 0.000 0.000 6.515


<r2> (average value of r2) Å2
<r2> 78.540
(<r2>)1/2 8.862