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

using model chemistry: mPW1PW91/6-31G**

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 mPW1PW91/6-31G**
 hartrees
Energy at 0K-2664.648427
Energy at 298.15K 
HF Energy-2664.648427
Nuclear repulsion energy125.788370
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 mPW1PW91/6-31G**
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 2343 2230 29.47      
2 Σ 605 576 1.62      
3 Π 411 391 2.18      
3 Π 411 391 2.18      

Unscaled Zero Point Vibrational Energy (zpe) 1885.1 cm-1
Scaled (by 0.9515) Zero Point Vibrational Energy (zpe) 1793.6 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 mPW1PW91/6-31G**
B
0.13862

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.127
N2 0.000 0.000 -2.288
Br3 0.000 0.000 0.651

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.16091.7775
N21.16092.9383
Br31.77752.9383

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 mPW1PW91/6-31G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.338      
2 N -0.405      
3 Br 0.067      


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 3.122 3.122
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.384 0.000 0.000
y 0.000 -28.384 0.000
z 0.000 0.000 -33.675
Traceless
 xyz
x 2.646 0.000 0.000
y 0.000 2.646 0.000
z 0.000 0.000 -5.292
Polar
3z2-r2-10.584
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 2.663 0.000 0.000
y 0.000 2.663 0.000
z 0.000 0.000 6.992


<r2> (average value of r2) Å2
<r2> 77.900
(<r2>)1/2 8.826