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

using model chemistry: TPSSh/cc-pVQZ

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 TPSSh/cc-pVQZ
 hartrees
Energy at 0K-93.467334
Energy at 298.15K-93.467461
HF Energy-93.467334
Nuclear repulsion energy23.986987
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 TPSSh/cc-pVQZ
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 3429 3429 58.94 29.59 0.23 0.38
2 Σ 2176 2176 0.64 52.00 0.11 0.20
3 Π 762 762 38.56 0.33 0.75 0.86
3 Π 762 762 38.56 0.33 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3564.5 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3564.5 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 TPSSh/cc-pVQZ
B
1.49289

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.498
H2 0.000 0.000 -1.566
N3 0.000 0.000 0.651

Atom - Atom Distances (Å)
  C1 H2 N3
C11.06721.1492
H21.06722.2164
N31.14922.2164

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 TPSSh/cc-pVQZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.099      
2 H 0.229      
3 N -0.130      


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 -2.983 2.983
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 1.866 0.000 0.000
y 0.000 1.866 0.000
z 0.000 0.000 3.285


<r2> (average value of r2) Å2
<r2> 13.788
(<r2>)1/2 3.713