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All results from a given calculation for HCN (Hydrogen cyanide)

using model chemistry: wB97X-D/CEP-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 wB97X-D/CEP-31G
 hartrees
Energy at 0K-16.082274
Energy at 298.15K-16.082413
HF Energy-16.082274
Nuclear repulsion energy12.100009
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 wB97X-D/CEP-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 3472 3472 36.94 33.61 0.22 0.36
2 Σ 2123 2123 1.68 50.05 0.21 0.35
3 Π 785 785 81.99 1.48 0.75 0.86
3 Π 785 785 81.99 1.48 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3582.8 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3582.8 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 wB97X-D/CEP-31G
B
1.42158

See section I.F.4 to change rotational constant units
Geometric Data calculated at wB97X-D/CEP-31G

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.514
H2 0.000 0.000 -1.590
N3 0.000 0.000 0.667

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07631.1810
H21.07632.2574
N31.18102.2574

picture of Hydrogen cyanide state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
H2 C1 N3 180.000
Electronic energy levels
Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at wB97X-D/CEP-31G Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.566      
2 H 0.292      
3 N 0.275      


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 -3.263 3.263
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.581 0.000 0.000
y 0.000 -11.581 0.000
z 0.000 0.000 -9.893
Traceless
 xyz
x -0.844 0.000 0.000
y 0.000 -0.844 0.000
z 0.000 0.000 1.688
Polar
3z2-r23.376
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 1.163 0.000 0.000
y 0.000 1.163 0.000
z 0.000 0.000 3.096


<r2> (average value of r2) Å2
<r2> 12.692
(<r2>)1/2 3.563