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

using model chemistry: B97D3/daug-cc-pVDZ

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 B97D3/daug-cc-pVDZ
 hartrees
Energy at 0K-93.377077
Energy at 298.15K-93.377157
HF Energy-93.377077
Nuclear repulsion energy23.656506
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 B97D3/daug-cc-pVDZ
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 3387 3387 49.77 36.25 0.24 0.39
2 Σ 2114 2114 0.13 68.06 0.07 0.13
3 Π 702 702 38.39 0.18 0.75 0.86
3 Π 702 702 38.39 0.18 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3452.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3452.1 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 B97D3/daug-cc-pVDZ
B
1.45199

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/daug-cc-pVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.506
H2 0.000 0.000 -1.584
N3 0.000 0.000 0.660

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07781.1661
H21.07782.2439
N31.16612.2439

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 B97D3/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.401      
2 H -0.272      
3 N -0.129      


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 -2.959 2.959
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.807 0.000 0.000
y 0.000 -11.807 0.000
z 0.000 0.000 -9.875
Traceless
 xyz
x -0.966 0.000 0.000
y 0.000 -0.966 0.000
z 0.000 0.000 1.932
Polar
3z2-r23.864
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 2.206 0.000 0.000
y 0.000 2.206 0.000
z 0.000 0.000 3.543


<r2> (average value of r2) Å2
<r2> 14.067
(<r2>)1/2 3.751