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

using model chemistry: B97D3/6-31+G**

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 B97D3/6-31+G**
 hartrees
Energy at 0K-93.368657
Energy at 298.15K-93.368748
HF Energy-93.368657
Nuclear repulsion energy23.658717
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 B97D3/6-31+G**
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 3408 3350 51.82 35.78 0.24 0.38
2 Σ 2131 2094 0.37 51.10 0.15 0.26
3 Π 721 708 50.93 0.79 0.75 0.86
3 Π 721 708 50.93 0.79 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3490.2 cm-1
Scaled (by 0.9828) Zero Point Vibrational Energy (zpe) 3430.1 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 B97D3/6-31+G**
B
1.45221

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.507
H2 0.000 0.000 -1.581
N3 0.000 0.000 0.660

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07431.1667
H21.07432.2409
N31.16672.2409

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 B97D3/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.071      
2 H 0.238      
3 N -0.309      


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 -2.996 2.996
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.828 0.000 0.000
y 0.000 -11.828 0.000
z 0.000 0.000 -9.833
Traceless
 xyz
x -0.997 0.000 0.000
y 0.000 -0.997 0.000
z 0.000 0.000 1.995
Polar
3z2-r23.990
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 1.558 0.000 0.000
y 0.000 1.558 0.000
z 0.000 0.000 3.473


<r2> (average value of r2) Å2
<r2> 14.061
(<r2>)1/2 3.750