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

using model chemistry: CCD/daug-cc-pVDZ

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/daug-cc-pVDZ
 hartrees
Energy at 0K-93.188743
Energy at 298.15K-93.188842
HF Energy-92.885966
Nuclear repulsion energy23.647064
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/daug-cc-pVDZ
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 3447 3447 66.72      
2 Σ 2158 2158 0.34      
3 Π 725 725 36.36      
3 Π 725 725 36.36      

Unscaled Zero Point Vibrational Energy (zpe) 3527.1 cm-1
Scaled (by 1) Zero Point Vibrational Energy (zpe) 3527.1 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/daug-cc-pVDZ
B
1.45083

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

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 -1.585
N3 0.000 0.000 0.660

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07851.1665
H21.07852.2450
N31.16652.2450

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