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

using model chemistry: G3B3

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 G3B3
 hartrees
Energy at 0K-93.378247
Energy at 298.15K-93.374744
HF Energy-93.422617
Nuclear repulsion energy23.837578
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 B3LYP/6-31G*
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 3481 3343 52.48 27.59 0.24 0.39
2 Σ 2214 2126 1.97 33.90 0.25 0.39
3 Π 767 736 35.50 0.05 0.75 0.86
3 Π 767 736 35.50 0.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3613.8 cm-1
Scaled (by 0.9603) Zero Point Vibrational Energy (zpe) 3470.3 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 B3LYP/6-31G*
B
1.47433

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/6-31G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.502
H2 0.000 0.000 -1.573
N3 0.000 0.000 0.655

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07051.1571
H21.07052.2275
N31.15712.2275

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 B3LYP/6-31G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.109      
2 H 0.250      
3 N -0.358      


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 -2.905 2.905
CHELPG 0.000 0.000 -2.850 2.850
AIM 0.000 0.000 1.990 1.990
ESP 0.000 0.000 -2.872 2.872


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 0.000 0.000 0.000
y 0.000 0.000 0.000
z 0.000 0.000 0.000


<r2> (average value of r2) Å2
<r2> 13.720
(<r2>)1/2 3.704