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

using model chemistry: CCD/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 CCD/6-311G**
 hartrees
Energy at 0K-93.202271
Energy at 298.15K-93.202408
HF Energy-92.897727
Nuclear repulsion energy23.877576
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 CCD/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 3491 3334 66.04      
2 Σ 2184 2086 0.29      
3 Π 776 741 36.08      
3 Π 776 741 36.08      

Unscaled Zero Point Vibrational Energy (zpe) 3613.1 cm-1
Scaled (by 0.9551) Zero Point Vibrational Energy (zpe) 3450.9 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 CCD/6-311G**
B
1.47926

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

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 -1.569
N3 0.000 0.000 0.654

Atom - Atom Distances (Å)
  C1 H2 N3
C11.06821.1552
H21.06822.2234
N31.15522.2234

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