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

using model chemistry: CID/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 CID/6-311+G(3df,2p)
 hartrees
Energy at 0K-93.228243
Energy at 298.15K-93.228393
HF Energy-92.908510
Nuclear repulsion energy24.128442
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 CID/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 3524 3256 73.38      
2 Σ 2259 2087 2.40      
3 Π 794 734 34.69      
3 Π 794 734 34.69      

Unscaled Zero Point Vibrational Energy (zpe) 3685.5 cm-1
Scaled (by 0.924) Zero Point Vibrational Energy (zpe) 3405.4 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 CID/6-311+G(3df,2p)
B
1.51057

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

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.495
H2 0.000 0.000 -1.557
N3 0.000 0.000 0.647

Atom - Atom Distances (Å)
  C1 H2 N3
C11.06221.1422
H21.06222.2044
N31.14222.2044

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