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

using model chemistry: CCD/aug-cc-pVTZ

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/aug-cc-pVTZ
 hartrees
Energy at 0K-93.259213
Energy at 298.15K-93.259333
HF Energy-92.909491
Nuclear repulsion energy23.972652
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/aug-cc-pVTZ
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 3472 3323 69.91      
2 Σ 2192 2098 0.80      
3 Π 751 718 34.56      
3 Π 751 718 34.56      

Unscaled Zero Point Vibrational Energy (zpe) 3582.7 cm-1
Scaled (by 0.957) Zero Point Vibrational Energy (zpe) 3428.6 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 CCD/aug-cc-pVTZ
B
1.49107

See section I.F.4 to change rotational constant units
Geometric Data calculated at CCD/aug-cc-pVTZ

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.499
H2 0.000 0.000 -1.564
N3 0.000 0.000 0.651

Atom - Atom Distances (Å)
  C1 H2 N3
C11.06441.1508
H21.06442.2152
N31.15082.2152

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