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

using model chemistry: LSDA/cc-pCVQZ

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 LSDA/cc-pCVQZ
 hartrees
Energy at 0K-92.931236
Energy at 298.15K 
HF Energy-92.931236
Nuclear repulsion energy23.957512
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 LSDA/cc-pCVQZ
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 3354 3354 74.87      
2 Σ 2161 2161 0.64      
3 Π 724 724 36.78      
3 Π 724 724 36.78      

Unscaled Zero Point Vibrational Energy (zpe) 3482.2 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3482.2 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 LSDA/cc-pCVQZ
B
1.48927

See section I.F.4 to change rotational constant units
Geometric Data calculated at LSDA/cc-pCVQZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.497
H2 0.000 0.000 -1.575
N3 0.000 0.000 0.651

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07721.1488
H21.07722.2260
N31.14882.2260

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 LSDA/cc-pCVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.057      
2 H 0.151      
3 N -0.094      


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 -3.004 3.004
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.893 0.000 0.000
y 0.000 1.893 0.000
z 0.000 0.000 3.326


<r2> (average value of r2) Å2
<r2> 13.880
(<r2>)1/2 3.726