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

using model chemistry: M06-2X/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 M06-2X/6-31+G**
 hartrees
Energy at 0K-93.390166
Energy at 298.15K-93.390306
HF Energy-93.390166
Nuclear repulsion energy23.919010
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 M06-2X/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 3489 3322 75.96 26.56 0.23 0.38
2 Σ 2265 2157 3.92 50.98 0.15 0.26
3 Π 782 745 49.85 0.59 0.75 0.86
3 Π 782 745 49.85 0.59 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3659.3 cm-1
Scaled (by 0.9522) Zero Point Vibrational Energy (zpe) 3484.4 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 M06-2X/6-31+G**
B
1.48445

See section I.F.4 to change rotational constant units
Geometric Data calculated at M06-2X/6-31+G**

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.500
H2 0.000 0.000 -1.570
N3 0.000 0.000 0.653

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07061.1524
H21.07062.2229
N31.15242.2229

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 M06-2X/6-31+G** Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.064      
2 H 0.262      
3 N -0.326      


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 -3.069 3.069
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.848 0.000 0.000
y 0.000 -11.848 0.000
z 0.000 0.000 -9.707
Traceless
 xyz
x -1.070 0.000 0.000
y 0.000 -1.070 0.000
z 0.000 0.000 2.141
Polar
3z2-r24.281
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 1.458 0.000 0.000
y 0.000 1.458 0.000
z 0.000 0.000 3.313


<r2> (average value of r2) Å2
<r2> 13.900
(<r2>)1/2 3.728