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

using model chemistry: HF/6-311G*

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 HF/6-311G*
 hartrees
Energy at 0K-92.896984
Energy at 298.15K-92.897181
HF Energy-92.896984
Nuclear repulsion energy24.419114
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 HF/6-311G*
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 3633 3286 57.12 14.13 0.28 0.44
2 Σ 2413 2182 10.65 44.10 0.19 0.32
3 Π 875 791 38.41 1.05 0.75 0.86
3 Π 875 791 38.41 1.05 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3897.8 cm-1
Scaled (by 0.9044) Zero Point Vibrational Energy (zpe) 3525.1 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 HF/6-311G*
B
1.54721

See section I.F.4 to change rotational constant units
Geometric Data calculated at HF/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.488
H2 0.000 0.000 -1.546
N3 0.000 0.000 0.639

Atom - Atom Distances (Å)
  C1 H2 N3
C11.05861.1268
H21.05862.1853
N31.12682.1853

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

Electronic state

Charges, Dipole, Quadrupole and Polarizability
Charges from optimized geometry at HF/6-311G* Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C -0.038      
2 H 0.342      
3 N -0.304      


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 -3.220 3.220
CHELPG        
AIM        
ESP 0.000 0.000 -3.187 3.187


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.710 0.000 0.000
y 0.000 -11.710 0.000
z 0.000 0.000 -9.631
Traceless
 xyz
x -1.039 0.000 0.000
y 0.000 -1.039 0.000
z 0.000 0.000 2.079
Polar
3z2-r24.158
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 1.247 0.000 0.000
y 0.000 1.247 0.000
z 0.000 0.000 2.938


<r2> (average value of r2) Å2
<r2> 13.558
(<r2>)1/2 3.682