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

using model chemistry: B97D3/6-311+G(3df,2p)

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 B97D3/6-311+G(3df,2p)
 hartrees
Energy at 0K-93.397374
Energy at 298.15K-93.397479
HF Energy-93.397374
Nuclear repulsion energy23.869957
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 B97D3/6-311+G(3df,2p)
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 3382 3338 52.67 32.17 0.24 0.38
2 Σ 2127 2099 0.14 60.83 0.08 0.16
3 Π 734 725 37.82 0.36 0.75 0.86
3 Π 734 725 37.82 0.36 0.75 0.86

Unscaled Zero Point Vibrational Energy (zpe) 3488.0 cm-1
Scaled (by 0.987) Zero Point Vibrational Energy (zpe) 3442.6 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 B97D3/6-311+G(3df,2p)
B
1.47835

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/6-311+G(3df,2p)

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 -1.572
N3 0.000 0.000 0.654

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07101.1551
H21.07102.2261
N31.15512.2261

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 B97D3/6-311+G(3df,2p) Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.428      
2 H 0.258      
3 N -0.686      


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 -2.969 2.969
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å
Primitive
 xyz
x -11.755 0.000 0.000
y 0.000 -11.755 0.000
z 0.000 0.000 -9.875
Traceless
 xyz
x -0.940 0.000 0.000
y 0.000 -0.940 0.000
z 0.000 0.000 1.880
Polar
3z2-r23.760
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 2.098 0.000 0.000
y 0.000 2.098 0.000
z 0.000 0.000 3.465


<r2> (average value of r2) Å2
<r2> 13.923
(<r2>)1/2 3.731