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

using model chemistry: CCD/cc-pCVTZ

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/cc-pCVTZ
 hartrees
Energy at 0K-93.257280
Energy at 298.15K-93.257403
HF Energy-92.909458
Nuclear repulsion energy23.992230
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/cc-pCVTZ
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 3472 68.95      
2 Σ 2199 2199 0.48      
3 Π 753 753 34.87      
3 Π 753 753 34.87      

Unscaled Zero Point Vibrational Energy (zpe) 3588.7 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3588.7 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/cc-pCVTZ
B
1.49353

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

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
C11.06541.1492
H21.06542.2146
N31.14922.2146

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