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

using model chemistry: B97D3/cc-pCVDZ

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/cc-pCVDZ
 hartrees
Energy at 0K-93.373669
Energy at 298.15K-93.373784
HF Energy-93.373669
Nuclear repulsion energy23.646641
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/cc-pCVDZ
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
(Å4/u)
Dep P Dep U
1 Σ 3401 3401 48.34      
2 Σ 2124 2124 0.41      
3 Π 741 741 33.88      
3 Π 741 741 33.88      

Unscaled Zero Point Vibrational Energy (zpe) 3503.6 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3503.6 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/cc-pCVDZ
B
1.45081

See section I.F.4 to change rotational constant units
Geometric Data calculated at B97D3/cc-pCVDZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.506
H2 0.000 0.000 -1.587
N3 0.000 0.000 0.660

Atom - Atom Distances (Å)
  C1 H2 N3
C11.08091.1660
H21.08092.2469
N31.16602.2469

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/cc-pCVDZ Charges (e)
Number Element Mulliken CHELPG AIM ESP
1 C 0.014      
2 H 0.080      
3 N -0.094      


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 -2.742 2.742
CHELPG        
AIM        
ESP        


Electric Quadrupole moment
Quadrupole components in D Å


Polarizabilities
Components of the polarizability tensor.
Units are Å3 (Angstrom cubed)
Change units.
  x y z
x 1.294 0.000 0.000
y 0.000 1.294 0.000
z 0.000 0.000 3.048


<r2> (average value of r2) Å2
<r2> 13.856
(<r2>)1/2 3.722