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

using model chemistry: B3LYP/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 B3LYP/daug-cc-pVDZ
 hartrees
Energy at 0K-93.437546
Energy at 298.15K-93.437648
HF Energy-93.437546
Nuclear repulsion energy23.832164
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/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 3446 3446 67.37 28.46 0.24 0.38
2 Σ 2186 2186 1.44 66.83 0.07 0.12
3 Π 727 727 37.52 0.23 0.75 0.86
3 Π 727 727 37.52 0.23 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3543.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3543.6 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/daug-cc-pVDZ
B
1.47368

See section I.F.4 to change rotational constant units
Geometric Data calculated at B3LYP/daug-cc-pVDZ

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 -1.575
N3 0.000 0.000 0.655

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07351.1568
H21.07352.2303
N31.15682.2303

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/daug-cc-pVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.547      
2 H -0.378      
3 N -0.169      


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 -3.040 3.040
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.875 0.000 0.000
y 0.000 -11.875 0.000
z 0.000 0.000 -9.897
Traceless
 xyz
x -0.989 0.000 0.000
y 0.000 -0.989 0.000
z 0.000 0.000 1.978
Polar
3z2-r23.956
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 2.147 0.000 0.000
y 0.000 2.147 0.000
z 0.000 0.000 3.436


<r2> (average value of r2) Å2
<r2> 14.000
(<r2>)1/2 3.742