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

using model chemistry: MP4/6-311G*

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 MP4/6-311G*
 hartrees
Energy at 0K-93.215903
Energy at 298.15K-93.215986
HF Energy-92.891734
Nuclear repulsion energy23.580495
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 MP4/6-311G*
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 3428 3288        
2 Σ 2011 1929        
3 Π 712 683        
3 Π 712 682        

Unscaled Zero Point Vibrational Energy (zpe) 3431.4 cm-1
Scaled (by 0.959) Zero Point Vibrational Energy (zpe) 3290.7 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 MP4/6-311G*
B
1.44322

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP4/6-311G*

Point Group is C∞v

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 0.000 0.000 -0.509
H2 0.000 0.000 -1.581
N3 0.000 0.000 0.662

Atom - Atom Distances (Å)
  C1 H2 N3
C11.07221.1714
H21.07222.2435
N31.17142.2435

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