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

using model chemistry: CID/6-31G*

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/6-31G*
 hartrees
Energy at 0K-93.142270
Energy at 298.15K-93.142394
HF Energy-92.873795
Nuclear repulsion energy23.886728
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/6-31G*
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 3559 3287 58.98      
2 Σ 2268 2095 2.26      
3 Π 766 708 38.96      
3 Π 766 708 38.96      

Unscaled Zero Point Vibrational Energy (zpe) 3679.6 cm-1
Scaled (by 0.9237) Zero Point Vibrational Energy (zpe) 3398.9 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 CID/6-31G*
B
1.48038

See section I.F.4 to change rotational constant units
Geometric Data calculated at CID/6-31G*

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 -1.568
N3 0.000 0.000 0.654

Atom - Atom Distances (Å)
  C1 H2 N3
C11.06711.1549
H21.06712.2220
N31.15492.2220

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

Electronic state

Charges, Dipole, Quadrupole and Polarizability