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

using model chemistry: B2PLYP/Def2TZVPP

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 B2PLYP/Def2TZVPP
 hartrees
Energy at 0K-93.393203
Energy at 298.15K-93.393322
HF Energy-93.277384
Nuclear repulsion energy23.914933
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 B2PLYP/Def2TZVPP
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 3459 3459 69.27 29.93 0.21 0.35
2 Σ 2130 2130 0.21 44.36 0.13 0.23
3 Π 753 753 37.39 0.41 0.75 0.86
3 Π 753 753 37.39 0.41 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3547.9 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3547.9 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 B2PLYP/Def2TZVPP
B
1.48387

See section I.F.4 to change rotational constant units
Geometric Data calculated at B2PLYP/Def2TZVPP

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.501
H2 0.000 0.000 -1.566
N3 0.000 0.000 0.653

Atom - Atom Distances (Å)
  C1 H2 N3
C11.06501.1537
H21.06502.2187
N31.15372.2187

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 B2PLYP/Def2TZVPP Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.203      
2 H 0.219      
3 N -0.015      


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 -3.013 3.013
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.783 0.000 0.000
y 0.000 -11.783 0.000
z 0.000 0.000 -9.878
Traceless
 xyz
x -0.952 0.000 0.000
y 0.000 -0.952 0.000
z 0.000 0.000 1.905
Polar
3z2-r23.809
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 1.709 0.000 0.000
y 0.000 1.709 0.000
z 0.000 0.000 3.228


<r2> (average value of r2) Å2
<r2> 13.903
(<r2>)1/2 3.729