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

using model chemistry: mPW1PW91/6-31G(2df,p)

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(2df,p)
 hartrees
Energy at 0K-2664.827313
Energy at 298.15K 
HF Energy-2664.827313
Nuclear repulsion energy126.794361
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(2df,p)
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 2347 2240 28.08      
2 Σ 635 606 1.05      
3 Π 401 383 2.22      
3 Π 401 383 2.22      

Unscaled Zero Point Vibrational Energy (zpe) 1891.6 cm-1
Scaled (by 0.9547) Zero Point Vibrational Energy (zpe) 1805.9 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 mPW1PW91/6-31G(2df,p)
B
0.14081

See section I.F.4 to change rotational constant units
Geometric Data calculated at mPW1PW91/6-31G(2df,p)

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -1.115
N2 0.000 0.000 -2.271
Br3 0.000 0.000 0.645

Atom - Atom Distances (Å)
  C1 N2 Br3
C11.15621.7605
N21.15622.9167
Br31.76052.9167

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(2df,p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.059      
2 N -0.299      
3 Br 0.240      


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 3.110 3.110
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -28.209 0.000 0.000
y 0.000 -28.209 0.000
z 0.000 0.000 -33.748
Traceless
 xyz
x 2.770 0.000 0.000
y 0.000 2.770 0.000
z 0.000 0.000 -5.539
Polar
3z2-r2-11.078
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 3.437 0.000 0.000
y 0.000 3.437 0.000
z 0.000 0.000 7.266


<r2> (average value of r2) Å2
<r2> 76.925
(<r2>)1/2 8.771